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1999 ls400 low idle. You are looking for an air control valve.

1999 ls400 low idle. Clean your idle air control valve to fix it This video on.
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1999 ls400 low idle By Razor61 August 20, 2020 in LS 400 / Lexus LS 430 / Lexus LS 460 / Lexus 600h / Lexus 500h Club Share Erratic idling sometimes well over 1000 revs, engine revving by itself at low speeds and driving the car forward when it 96 lexus ls400. after reading much on this issue I think the problem is due to a vacuum leak. Your rough idle/no power sounds just like my '90 LS when the idle-air control (IAC) valve when out (after I washed the engine and didn't cover the IAC completely). Favourite is the TB clean, there is a little hole in the butterfly and if this gets clogged it can cause low idle despite the 1992 lexus ls400 has low, rough idle, extremely slow acceleration. All OEM 1992 Lexus SC400 Idle Control Valve we offer are backed by the manufacturer's warranty, assuring you of their quality, reliability, and durability. Car & Truck. Then normal after long warm up. WVE . Once it is warm . By soarer400 December 27, 2008 in 92 - 00 Lexus SC300 / SC400 Share It wont hurt it, but it may help the rough or low idle a bit. Dec 7, 2008 Get the wholesale-priced Genuine OEM Lexus Idle Control Valve for 1996 Lexus LS400 at LexusPartsNow Up to 33% off MSRP. Here is a quick guide on how to fix a Toyota or Lexus that either idles high or stalls on start up. The car shakes due to the low idle. Members; 41 Lexus Model: LS400 '94 Location: Kent; Author My 94 LS400 idles @ 1200 when cold, but I don't get jolts when moving off after firing her up ! :mat: risingsun. When at idle in gear my A/C keeps cycling on and off. 6) Bypassed powersteering idle up valve - completely resolved low idle issues. Any help? Also,my post from a while ago ( My mistake on year): landar. Very quiet, in fact. I wouldn't worry about the intial slightly high idle as long as you end up at ~650. Very nice. Our seamless return policy and speedy delivery service further enhance your I just spent the better part of 2 hours reading an older thread on here concerning an idling issue with 95's and I read that there were some older LS's with similar problems: 1. Recently I had a mechanic run a diagnostic on it because it was running rough, low idle, no. M. I've had occurrences of both 1995 problems - the low idle after high speed trips, and rough transmission shifts. Posted January 14, 2012. 14,440 Satisfied Customers. You might try pulling the ECM and removing the cover to look for 92 - 00 Lexus SC300 / SC400 ; 93 Sc300 Idle Problems 93 Sc300 Idle Problems. Posted January 24, 2004. p I have a 1995 Lexus LS400. I have variable hi and low idols when i come to a stop, when i accellerate around 45-55mph the truck seems like its My 1999 LS400 Lexus has a VSC problem. Man, thats low miles(100k) for a 95. I used to be able to look at the revs vanishing to extremely low but of course i can't do that now. What could cause this. When the TPS is turned as far counter-clockwise as it will go the idle speed will be at its lowest. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 Oil Pan at competitive prices. Get repair cost estimates and troubleshooting tips at RepairPal. BigBob. car is giving cel code engine - 25, 26, trac code - 11, 51. 90 - 00 Lexus LS400 ; 98 Ls400 Ocv Rough Idle Theme . 500rpm's or so. When cold outside Idle is 700/750 until car engine is of correct temp then idle slowly drops to 200 rpm. All OEM 1999 Lexus LS400 Oil Pan we offer are backed by the manufacturer's warranty, assuring you of their quality 90 - 00 Lexus LS400 ; No Heat At Idle Air Lock No Heat At Idle Air Lock. I have just recently tried to fix the misfire by replacing the plugs, caps and rotors. All OEM 1991 Lexus LS400 Idle Control Valve we offer are backed by the manufacturer's warranty, assuring you of their quality, reliability, and durability. 61,569 Satisfied Customers. The idle has dropped to about 400 all the time now from IIRC about 550. The car idle gets very low at stop signs and the car stumbles like the engine might die. 97 to $106. From what I understand, the LS400 should idle around 650 when in drive or parked, etc. Does anyone know if this problem something an average independent Lexus or Toyota mechanic can handle? Thank Whats up guys, this problem just started yesterday. Then shut the vehicle off, remove the battery cables and hold them together for one minute. Using a Battery booster i turned the key and started but soon as i let go of the throttle it turned off i tried it again and again after 3rd tim if your lexus is having a misfire at idle or won't rev past a certain rpm, this video may be for you. Ive cleaned the throttle body, replaced the PCV valve, checked for vacuum leaks, new plugs, recent timing belt done at the dealer ( before I bought it) changed the blinker fluid ect. Otherwise it would be worse in gear and then trying to move would be impossible to do as the fuel would dry up to the engine. The car has relatively low miles and this issue began with only Fuel Injection Idle Air Control Valve. 5v-14. For peace of mind as wonderful as your Lexus, get our comprehensive tire protection coverage. phobia · Started March 21, 2024. All OEM 1999 Lexus LS400 Catalytic Converter we offer are backed by the manufacturer's warranty Well, I may be able to provide some feedback on the 1995 ECU vs 1996 ECU questions. All OEM 1999 Lexus LS400 Exhaust Pipe we offer are backed by the manufacturer's warranty, assuring you of The Lexus LS400 Idle Control Valve is an important part which highly indicators the Lexus brand for its reliability and performance. THIS VIDEO IS STRICTLY FOR ENTERTAINMENT 90 - 00 Lexus LS400 ; 1997 LS400 Idle Problems 1997 LS400 Idle Problems. lic. Juan Crespo. If the car is under warranty, I would take it to the dealership. So I had been having an issue with my LS where it would idle considerably higher than it should. 1999 Lexus LS400 Idle Air Control Valve. 1 Theme . I sat there, letting it idle and shifting through and listening. In this video, you will learn 4 symptoms of a bad idle air control valve. we're hiring! SHOP. Hello to this LS400 forum - I have a 95 LS400 with 144k miles on it. The throttle cable, specifically, controls the idle speed. If I keep the accelerator pedal depress hard the engine stops. Mine typically does. Any suggestions would be greatly appreciated! thx. Visit any of our 1,100-plus stores for world-class customer service, free tire maintenance and an impressive stock of 1999 Lexus LS400 tires. Posted June 26, 2021. 8 cylinder. Our seamless return policy and speedy delivery service further enhance your Our website provides an extensive catalogue of genuine 1997 Lexus LS400 Idle Control Valve at competitive prices. Whenever the The car idles low (about 400) and almost dies. 6. 1, . By prix November 26, 2005 in 90 - 00 Lexus LS400 IN another thread (that long thread about low idle/engine dying), Bob is saying he's convinced it's the IAC closing off that is causing the engine to konk. Rich might indicate a ruptured Fuel Pressure Regulator Diaphragm or blocked air passage at the throttle plate, or Idle Air Control Valve, Bypass air route. Lexus dealer has not been contacted about the problem. Has anyone ever fixed this? Seems to be super common, but most threads I’ve read end without any real solut Jump to content. When I accelerate gradually until 3500tr/mn all goes well then the engine dies and if I release the accelerator pedal the engine goes back to iddle well. If that doesn't help, I'm just gonna send Lexus Model: 1999 LS400; Posted April 29, 2004. He said it indicated it needed a new air flow meter. The spike in temperature will be highest when the vehicle is idling at a stop, but should Read More. Somewhere in there Specially designed for the 1999 Lexus LS400, this Fuel Injector offers superior reliability and ease of installation for anyone. I'm hoping to find some insights about Lexus Model: 1999 GS400 w/ L-sportline Modifications; Posted February 17, 2004. Check VSC. Cleaning throttle body helped the low cold start rpm, but not the warm low idle in drive. Change Part / Brand Change Vehicle. I turn the A/C button off when using auto-climate this time of year, so that's not it. It's FREE! Sign In; or; Sign Up; Sign in with Facebook. Hi I have a Lexus ls400 1995 There is currently a low idle issue . 14,254 Satisfied Customers. I've just had my plugs, wires, caps, roters and air filter replaced, so could it be the fuel filter? The funny thing is that it didn't 1999 ls400 wont idle Join The Club. Full Manufacturer Warranty. LexusPro Lexus SC400 Rough Idle? RepairPal will help you figure out whether it's your Vacuum Leak, Spark Plugs, Ignition Coil, or something else. Problem on my LS400, I hope there is some help here as this seems to be the most qualified Forum, great! Problem is as follows. I found an OBD2 port under the dash and was thinking of getting an OBD2 cable and software for a laptop. 7 Theme . Low cranking speed is mostly due to 1995 LS400 complete step-by-step intake manifold removal and install, replacement of fuel injectors and seals, and ECU installation. Lexus LS 400. now it runs at about 400 rpm it Lexus ES300 with very low idle after disconnecting the battery. Approximately 350-400 rpm when stopped at a red light in Drive. 90 - Buy a 1999 Lexus LS400 Air Mass Sensor at discount prices. That helped a lot -- idle speed was up, though still on the low side. I have a 1999 LS 400 with just over 90k miles. 25v if rev'd to 1k rpms. Choose top quality brands Genuine, Standard Motor Products, Wells. From lightweight, durable rims with high style points to moderate, low-key and tasteful Lexus rims, our inventory can’t be beat. No CEL. I may be losing count but I think at 149,000 90 - 00 Lexus LS400 ; 98 Ls400 Low Idle Theme . Hello I dirve a 1994 ls400. Starting the car up cold each day the idle is between 1800 and 2000 rpm. Changing the fuel filter My suggestion is to unplug the IAC then adjust the throttle stop screw so the idle is 500. 1,978 Satisfied Customers. I just got this 95 LS400 but there is a small power steering leak, maybe 1 liter per month. Our seamless return policy and speedy delivery service further enhance your Our website provides an extensive catalogue of genuine 1991 Lexus LS400 Idle Control Valve at competitive prices. Removed it and installed another. Also, when gear in D, it does have a little shake (not to much compare to when gear is in P or N). Posted January 18, 2012. The hardest part about doing this is getting the throttle body off. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 A/C Idler Pulley at competitive prices. My 2000 lexus lx470 has the abs, vsc track, vsc off lights. Specially designed for the 1999 Lexus LS400, this A/C Idler Pulley offers superior reliability and ease of installation for anyone. 00! Everyone pretty much agreed the surging was the valve. So the functional parts are likely to be mounted very nearby the throttle valve. i was curious if anyone else has experience this and knows how to fix it. In park or neutral A vacuum leak is most noticeable when it is a large proportion of the air ingested by the engine (i. 0L: Service type Idle Control Valve Replacement: Estimate $692. reconnected all wire and car still has low, rough idle, extremely slow acceleration. J have replaced the fuel 1990-1994 Lexus LS400. I've got a problem with the idle on my 96 LS400, 145k miles. Super Moderator; Sometimes after driving for thirty minutes and then putting it in park the idle won't even get back up to 400rpms. In driving condition it is the same thing as if the fuel pressure was not enough. 3 volts but Customer: My Lexus LS400 1993 as a good start to idle . Members; Low Idle whilst stopped in Drive. Lexus Expert. 11 ES350 / 99 LS400; Year: 1999; Location: Texas (TX) Posted May 3, 2007. i have a 99 gs 300 and nobody can figure out what is wrong with it. I have a low idle to the point where the car shakes. When I start the car, idle stays low, pretty much at 650rpm - which is the normal speed for when the engine is warm. 6 (Default) IPB 4. In my 96 the low pressure line is on the driver's side near the fire wall and has a black cap clearly marked L for what is the lowest possible safe idle speed for ls400/celsiors i know it should be about 650 but i recently changed my spark plugs / wires and while i had the throttle body off i though id clean it. The LOW WASHER FLUID reminder is active in the Multi Information Display. Got to the car and started it. Car idles to high and sounds really rough until completely warm then seems to run normal, worried - Lexus LS 400 question Im showing low vaccum, dumping 16% more fuel because the maf is trying to compensate for the low vaccum. Is that normal?. At high speed there are no issues, it is mostly happening now at very low speed and complete stop. I'll get a new TPS AND check the trunk lid wiring. It is very odd because once it comes back it is fine. I'm LS400 idle and cutting out issue. locate a store. a hose on my air intake is broken as well as the BVSV valves (yes I have searched alot looking to resolve this problem. Posted February 4, 2004. My Lexus LS400 1999 model has the VSC Off, Check Engine light on, with message . Specially designed for the 1999 Lexus LS400, this Exhaust Pipe offers superior reliability and ease of installation for anyone. LEXUS > 1999 > LS400 > 4. On tires and wheels with any $599+ total purchase :chairshot: I’m the same guy that posted about my Idle surging up and down from 1,100 rpm to about 1,800 rpm. Oil and transmission fluids are fine and it is not overheating. (A/C off) That's a little below the 650 that it's supposed to idle and this low idle shakes the car a bit. The car has never 1999 LS400 w/66K miles. The high idle is brought about by the auto choke whose purpose is to hasten the Idle Control Valve; Oxygen Sensor; Oxygen Sensor Connector; Oxygen Sensor Kit; Oxygen Sensor Set; Low Cost From $13. valve is supposed to increase the idle to 1999 LS400 wont start 1999 LS400 wont start. Choose top quality brands A1 Cardone, Autopart Premium, Beck Arnley, DIY Solutions, Delphi, DriveWire, GPD, Motorad, NGK, SKP, Spectra Premium, Standard Motor Products, Walker, Wells. Fast Online Catalog. wire loom w/ abt 20 wires, touched, shorted. Whenever we go to start the car it seems as though hitting the gas pedal only makes it want to die, but once we pump the brakes a couple of times it’ll start up, but if we hit the gas it bogs down/dies on us, and the car seems to be in some sort of limp mode and doesn 1995 Lexus LS400 Rough Idle? RepairPal will help you figure out whether it's your Vacuum Leak, Spark Plugs, Ignition Coil, or something else. 1999 Lexus LS400 Roller, Starter Idle Gear Clutch. 5 volts. Shop found nothing and just cleaned the throttle body. At 3000 rpm pressure should be from 43-85 psi. 90 - 00 Lexus LS400 ; Idle Speed Surging Up And Down Help Theme . My 1993 ls400 lexus idles fine, its when i drive it a short distance it cut off. In reverse it is 650. Maybe angle of faces has been compromised and while maybe "true" isn't at right angle between the faces anymore. 90 - 00 Lexus LS400 ; 1997 Ls400 Idle Surging Theme . You can hear it click and then the rpm's drop the up then down etc. smog tech, My 93 LS400 idle problems . Car will idle in 500-600 range, then drop to 300 Lexus Model: 1990 and 1999 LS400's ; Posted June 18, 2008. I must hold my foot on the pedal to keep it rev'd. Mullis · Started January 14. Compare 1999 Lexus LS400 Fuel Injection Idle Air Control Valves brands. 2. When it warms up, the car is perfectly normal, idle 90 - 00 Lexus LS400 ; 91 Ls400 Idle Problem Is Back 91 Ls400 Idle Problem Is Back. When you start the car the idle goes up and down and even after at warms up it still does it. it idles at about 1600-1700 rpm for about 5 minutes or until the engine is completely warm, i have owner 2 other gs's one 98 and another 99 and neither of them idled this high on a start. I was coming home from work about two days ago and out of no where it missed real bad almost like a stall but didnt turn off. My 96, when warmed up, idles at about 400rpm. 1991 Lexus Ls400 Installed Remanufactured Rack & Pinion steering became usually stiff. reconnected all wire and car still has low, rough idle, extrem At idle and low speed. 02 - $1321. I put another one on it and it ran great. Also the hesitation problem has gone away. DIY-Easy. Westman · Started Monday Lexus Model: 1999 LS400 White; Year: 1999; Location: Texas (TX) Posted October 7, 2011. Did this several times. Over 15 years experience in automotive field - ASE master technician and L1 advanced certification. Basically the title. Lexus LS400 1999. Any Hello i have a 97 lexus ls400 and it has started doing this at idle and neutral. com Our website provides an extensive catalogue of genuine 1992 Lexus SC400 Idle Control Valve at competitive prices. In one case she let off the brakes and the car inched forward and idling resumed, in the second case she shifted into neutral and that was enough to keep rpms up to avoid stalling. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 Exhaust Pipe at competitive prices. Whats the best aftermarket strut to keep I read that a loose vacuum line can cause the low idle that I am experiencing. All OEM 1993 Lexus LS400 Idle Control Valve we offer are backed by the manufacturer's warranty, assuring you of their quality, reliability, and durability. Regular Member; 12. Also I can get it up to speed okay, but the car wil its either a vacuum leak, the intake is cracked agian, dirty/bad idle air control valve, or a bad throttle position sensor. Can someone give me some ideas. SKperformance. a. My 1991 LS400 bucking while accelerating, rough idle, wild RPM searching when it's about to give out, and stalls when driving. At first, when I tried to drive off the parking lot, It has almost no power ie driving very slow. Ihave a 92 sc400 without about 130k miles. Car idles to high and sounds. 97 to $533. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 Fuel Injector at competitive prices. The car will run fine upon initial start up at both high and low speed but starts to act up once it is warm, normally idle fine for the first 10-11 minutes. when driving car cruises at 750 rpm but when at a stop idle srops to 200 rpm(250 if a/c is on). By messi February 13, 2020 in LS 400 / Lexus LS 430 / Lexus LS 460 / Lexus 600h / Lexus 500h Club Lexus Model: 1999 LS400 White; Year: 1999; Location: Texas (TX) I happened to clean the throttle body aiming to improve the low idle rpm. It is very difficult to pin point the problem. 1995 Lexus LS400 Rough Idle I've done a search and can't find any info on my problem. This can last seconds or even minutes. Sometimes has a slight suddle vibration while idling. The car runs very good has full power Cd system and Specially designed for the 1999 Lexus LS400, this Brake Booster offers superior reliability and ease of installation for anyone. It likes to dip super low below 1k and then come back up like that. learn more. Vehicle Specific. I was having problems with my car having low idle. The IACV is reman. Changed out the water temp sensor, cleaned the throttle box, air filter is ok, fuel filter is new, pcv valve is new. By LexLS. Passenger Cars, Mini Vans, SUV Service and Repairs. 97 . Fuel & Air Parts and More for Your 1998 LEXUS LS400 at Reliably Low Prices. Spark plugs, crank position sensor, fuel induction additives were completed by a mechanic. Lexus Model: 1999 LS400 White Hi guys i recently bought a 1997 ls400 with 75000 miles, the car has a loud clunk in the front right side of the car, it seems to be coming from the suspension but whe have checked springs, struts, strut bar bushings, we changed the lower ball joint, stabilizer bar bushings are ok, anyone have an idea what this could be? the noise is heard when going on uneven surfaces, YES I HAVE A 1990 LS400 IT BOGGED OUT ON ME THE OTHER DAY OVER AND OVER AGAIN KEPT DYING ON ME LIKE ABOUT 10 TIMES THEN I PUNCHED THE GAS PEDAL AND IT STOPPED AND ABOUT 2 MONTHS AGO THE IDLE STARTED TRIPPIN OUT GOING REAL HI THEN SHOOT BACK DOWN ABOUT TO DIE THEN SAVE ITSELF THEN This is how I deleted the power steering idle up valve for free. We did some testing on the alternator and at idle the voltage input to the battery is about 14. Began, Low?. Now my LS400 is reading low oil pressure more frequently starting today. I stopped by my local service shop, describe It’s a 1999 LS400 car starts but has bad Idle and when I press the accelerator at all it dies almost immediately ls400/celsior | Having trouble figuring out my bad idle, can anyone help SOURCE: 96 lexus ls400. Everyone here recommended me replacing my IACV and that did fix my issues of high idle. The washer fluid reservoir is full. Watching this video will help you diagnose to see if it is time to replace your idl It could be the fluid is low, it could be there is an oring for the screen that is not sealing. Charged battery, This just started. 99: Shop/Dealer Price $860. Get Yours Today! We have the best products at the right price. It shows 13. Recently I had a mechanic run a diagnostic on it because it was running rough, low idle, no power and I couldn't get it up to speed. ×. LS400 Overheating at Idle : r/Lexus - Reddit true Read 1999 Lexus LS400 Service Repair Manual by km9idist5odkmv on Issuu and browse thousands of other publications on our platform. Once warm, idles too low, 300-400 RPM, and will die unless either I give it some gas or turn the AC on. Estimated Cost The car stalled at a low idle (stop sign) and I had to restart. This is unmetered air by the MAF so the EFI gets confused and I think the correct idle is about 650 +- 50 at idle in or out of gear w/AC off. Car Specialist. All OEM 1999 Lexus LS400 Shift Solenoid we offer are backed by the manufacturer's warranty, assuring you Explore common causes and solutions for radiator fan issues in your 1999 Lexus LS400. Cranked fine. It will put out some warm air going down the road at the speed limit. I have had the car to TWO Lexus dealers I have a 01 LS430 with intermittent low idle. All OEM 1999 Lexus LS400 Brake Booster we offer are backed by the manufacturer's warranty, assuring you of I NEED HELP: LS400 STALLING ISSUE!If anyone has any ideas on what could be causing this please be sure to let me know!Merch!https://fitz-miller. Sign in with Google My 1995 LS400 has high idle on start ( about 1800). Today it did not stall but idle very low as before. My Lexus LS400 1999 model has the VSC Off, Check Engine light on, with 1999 LS400 190,000 miles. Posted February 7 1999 LS400; Posted Or sign in with one of these services. My 1995 LS400 is in the (non-Dealer) shop today for 90k service (spark plugs will be replaced, but cruise control computer will remain). Hi, Offhand, yes this would be normal. is this normal? Jump to content. 99 Ls400; Year: 1999; Location: California (CA) Posted February 1992 LS400, 328K miles The following was replaces at 300K miles: Timing Belt, Idler pulleys, Water Pump, Crank Seal, Cam Seals, rotors, Caps, Wire set, Spark Plugs At about 327,700 miles the Left side ignition coil failed; replaced both the left and right coils and that seemed to fix it. This applies to 1990-94 ls400 and probably up through 1997. Before doing anything read my disclaimer & safety info. Our seamless return policy and speedy delivery service further enhance your 90 - 00 Lexus LS400 ; Idle Air Control Valve Idle Air Control Valve. Create an account or sign in to comment. 1990 lexus ls400 ac compressor dont stop low. When cold, the engine will not start unless I feather the gas pedal, keep it at 1000 rpm for 30-45 seconds and then slowly back off the gas until it idles at around 450 RPM. If I bring the RPM up to about 1500, the voltage immediately goes up to about 13. At idle and low speed. Posted July Customer: I have just bought 1998 Lexus LS400 recently and I have noticed that Engine RPM is about 400 (or less) at D and about 750 at Park or Neutral. When you put it in drive it stops but the idle is still high(1000-1100). Idle Air Control Valve; Idle Control Valve; Mass Air Flow Sensor; Mass Air Flow Sensor Connector Still had the low idle problem though, so I cleaned the throttle body and Seafoamed the engine. I also posted about the Idle Control Valve (91 LS400), and the cost of replacing it, over $500. Lexus Model: mk 4 ls400 1999 Year of Lexus: 1999 Location: Cheshire; Posted April 13, 2017. Latest Posts; Home ; Forums ; Lexus Owners Club - Lexus Forums ; Lexus ES250 / ES300 / ES330 / ES350 / ES300h Club ; 92 - 06 Lexus ES250/300/330 ; Es300 - 1999 Will Not Idle When Cold 90 - 00 Lexus LS400 ; 95/96 Ls400 Low Idle, Engine Dies And Jerking Thre Theme . Now one day later the light stays on at idle and goes off once accelerating. Expert. This has been slowly going up the last few years. Lexus Model: 1999 LS400 White; Year: 1999; Location: Texas (TX) The VSC light is coming on and the car is throwing the VVT code, among others. When the car reaches operating temperature the idle drops to about 300 rpm however this rises back to normal when I turn the air con on I have cleaned the idle control valve and throttle body the best I can and it has improved it a bit Additionally there is slight misfire on idle havn't checked the Specially designed for the 1999 Lexus LS400, this Shift Solenoid offers superior reliability and ease of installation for anyone. After dr Our website provides an extensive catalogue of genuine 1995 Lexus LS400 Idle Control Valve at competitive prices. Engine symbol is - Answered by a verified Lexus Mechanic. This product is designed and tested to ensure the ultimate in durability and functionality. Bart. By ssls400 April 10, 2008 in LS 400 / Lexus LS 430 / Lexus LS 460 / Lexus 600h / Lexus 500h Club Whistle audible at low RPM. now the battery said it had 12. By wandawoods September 4, Hi I posted this on clublexus too, but trying to get some more opinions. My question has to do with the idler pulley for the serpentine, or drive belt (not timing belt). even if the vehicle has been sitting for only a couple of hours it will idle that high. 92 - 00 Lexus SC300 / SC400 ; Rough Idle Sc300 Theme . The car is up to date on its servicing and there are no warning lights on. Skyvisions. A few times the car has unexpectedly rev than returned to normal, sometimes the RPMs will drop and the car will stall. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 Brake Booster at competitive prices. Cleaning should also gain back some lost horsepower. Clean your idle air control valve to fix it This video on - low and rough idling that would cause the car engine to start shaking after starting the car 94-ES300 98-LS400 03-GS430; Year: 2008; Location: Ontario; Posted July 10, 2006. My friend bought a ‘96 LS400 that we’ve been trying to work on but can’t seem to find the issue. After checking my work, the car died a few more times and then ran fine but still had a very low idle RPM of about 400. TPS changed. 13. Order your parts online or pick them up in-store at your local Advance Auto Parts. baddad1. Today I went back and start the car, it fired right up as usual and I drove it for 11 miles, the first 3 miles were flawless and then the ghost re-appear. Skip to main content. By XL2007 December 9, 2008 in 90 - 00 Lexus LS400 On the way back, all of the symptoms came back -- the refusal to idle, and the super low (350-400rpm) idle on the off-chance that it does. I changed the battery last night and the car started right up this morning but 20 minutes into my drive the same message appeared (Headlight Leveling" as well as the stall when I stoped at a stop sign. I have a 1999 lexus ls400 and the battery light has com on and is solid after i got the alternator tested and got a new Low windshield washer warning light always on, Lexus LS400 1999. Sign in with Google *WORK ON YOUR CAR AT YOUR OWN RISKI AM NOT RESPONSIBLE FOR ANY DAMAGE THAT MAY BE CAUSED TO YOUR VEHICLE. Fluid at operating temp, level car, and engine running at idle in park to check the fluid level. So by turning the TPS clockwise, which puts more tension on the sensor, the idle speed is raised. Ah, the infamous low/rough idling issue. Has plenty of fluid. it sounds like you have a bad heater core, a possible leaky HVAC Pipe, old/low coolant or like SW03es mentioned new water pump. Notes Cleaning your throttle body may help solve a rough idle problem. Once it does konk, and once you restart the engine, then that IAC Ls400 Idle Problem. If the cable is too loose, the idle will drop. It is an idle issue and not an engine When the TPS is turned as far clockwise as it will go the idle speed will be at its highest. When Im driving its fine, but when the car is idle for more than 5 mins with the a/c on the temperature starts rising really fast and the car overheats!! Relatively low for the year i assume? I purchased this car because of it's reputation for being the most reliable car on the market. By armyastro August 24, 2006 in 92 - 00 Lexus SC300 / SC400 Share now it is back but alittle worse so i cleaned the throttle body and checked idle control assembly and cleaned inside the throttle body where it mounts and still nothing. Our seamless return policy and speedy delivery service further enhance your 93 Sc400 Idle Problem. Replace your worn-out or faulty component with this quality replacement I have a 91 ls400 and for some odd reason at any given moment it feels as if I have lost 90% of the power steering. Yours is at 1500 which is a little high. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 Shift Solenoid at competitive prices. 9 volts at idle. Normal idle without the A/C on is 650 RPM, + or - 50 RPM. Lights may alter the idle a minute amount. yep, I just done it for the masses, both of mine work properly. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 Catalytic Converter at competitive prices. Buy a 1999 Lexus LS400 Idle Control Valve at discount prices. Unbeatable Low Prices, Friendly Service. Removed and cleaned throttle body - helped to resolve low idle issues. what the heck? This only occurs at low engine rpm's, typically when idling with ac on. Lexus LS400: I am trying to replace the front hub bearings. wire loom w/ abt 20 wires, under passenger fender, touched, shorted. I recently noticed I have a low idle of 400 when in drive, and only drive (D,4,3,2,L). Or sign in with one of these services. I also have a misfire. functioning properly, the engine temperature will rise. AC may raise your idle to about 750 but it usually stabalizes. Hi everyone I need help I just started my lexus ls400 mk2 1993 after about 5months I made sure everything was all good before starting It oil water etc. Engine sludge comes from the extreme heat causing the oil to gel. Thankfully, it starts right back up and Im on my way. If I put it in neutral and rev it up sometimes it will be ok, sometimes not. All OEM 1995 Lexus LS400 Idle Control Valve we offer are backed by the manufacturer's warranty, assuring you of their quality, reliability, and durability. Neutral or Park it makes light Hello, We have a 1999 LS400 which has a few electrical gremlins. On average, the cost for a Lexus LS400 Idle Control Valve Replacement is $394 with $299 for parts and $95 for labor. Also everyone said to take the valve off and clean it. All OEM 1999 Lexus LS400 A/C Idler Pulley we offer are backed by the manufacturer's warranty, assuring Hello, I have a 99 LS400 with 67K on it, the idle is very low the rpm reads 350-400 at times and other times 400-500 (on a good day) the kicker is when I turn the a/c on it always drops the rpm it never more than 400 in D. Our seamless return policy and speedy delivery service further enhance your Have a 1991 ls400 that idles well when cold. 4,074 Satisfied Customers. (No Trucks) - 1995 Lexus LS400 idle speed much higher than before - Hello, I bought the car around 2007 with about 90k miles on it. This has been a problem I noticed on a lot of At idle and low speed. The GS has a history of this problem. I have a 94 Lexus SC400 (CA emissions) 200,000 miles. You are looking for an air control valve. myshopify. S. IACV check good when B1, B2, S1 - S4 was grounded, the audible click on shut down is also present. Can you provide me with the Trimming marks for a 1999 LEXUS LS400. Genuine Lexus Part - 8967247010 (89672-47010, 8967230010) 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 Fuel Injection Idle Air Control Valve Idle Air A 1991 LS400 with only 30,000 miles on it ? Would be nice to see some pictures and a little more history of your timewarp LS. E. a symptom of it is some white smoke on startup because the power steering fluid leaks into 1999 lexus ls400 coil packs just change 4 coil and still have 4 old was that was misfireing gonna get new ones in - Lexus 1999 LS 400 question he will need to look into the possibility of the EGR valve sticking open or some other issue to do with valve timing or low compression. I took it to a mechanic and he thinks it is a VVT issue? Any thoughts or recommendations would be appreciated. Around the 2,500 mark. 3. Kyle N. 3, . Specifically, the pulley attached to the tensioner arm. I have experiencing the low idle speed problem for about 6 months. 6 (Default) 1992 ls 400 oil pressure light comes on for about a minute than goes off while driving even though the oil level is at full. com. TunedRX300. It idles at about 300 rpm tops. But overall, the car ran great. LS400 Bogs bad at 3. However under full load the voltage drops to around 12. Speedo and gas Recently I had a mechanic run a diagnostic on it because it was running rough, low idle, no. Price: Alternate: No parts for vehicles in selected markets. Here is a simple test. Posted October 3, 2005. Our website provides an extensive catalogue of genuine 1999 Lexus LS400 Timing Belt at competitive prices. The MAF sensor is reman. Showing 4 of 4 Results 90 - 00 Lexus LS400 ; 95/96 Ls400 Low Idle, Engine Dies And Jerking Thre Theme . My problem is that the idle is too low. • Burned valve(s) from one of the overheating episodes. low idle 1991 ls400. I spent six months chas 92 - 00 Lexus SC300 / SC400 ; Low Idle After New Battery Theme . 1999 LS400. LS - 1st and 2nd Gen (1990-2000) - Can't Seem to Fix Low Idle!!! *rolls eyes* - Hi everyone, I've successfully resolved many issues on my 1996 LS due to all the information on this forum, however one issue that is driving me nuts is my low idle problem. Suspect: • Damage related to overheating once too often or for a little too long. 95 1999 Lexus LS400 : 4. Car Service Estimate 1999 Lexus LS400 V8-4. • Low power. If you have access to a diagnostic tool that can show you rpm/engine temp/fuel trims etc it would help eliminate a faulty sensor, if not start by It started after I did this, and seemed happy. ls400; By Negative February 21, 2016 in 90 - 00 Lexus LS400 Ever since then it tries to idle very low until the volts get dangerously low and it dies. As the engine warms it slowly decreases to 750 rpm at normal operating temp. IPB 4. c. It could be a partially blocked issue combined with something else to cause a low idle. Send to Car. The idle on a Lexus LS400 is controlled primarily by the throttle. Normal idle speed is 650 RPM, plus or minus 50 RPM. High idling at low temp. Pretty set on low fluid level. Join the Lexus Owners Club and be part of the Community. ( you don't have to remove the pump itself) Fuel & Air Parts and More for Your 1996 LEXUS LS400 at Reliably Low Prices. for future reference don't ever put a low pressure water hose on your engine bay, if you have to do that use a high pressure sprayer, and make sure you cover up all electrical. 1 answer. It is mounted on the passenger side of the PS pump and is downward facing in about the 7:30 position. The valve is designed to increase idle at low speed when the steering wheel is turned to prevent the RPM from dropping too low (or stalling out Lexus LS400 1999, Idle Air Control Valve by WVE®. Regular Member; 3 Specially designed for the 1999 Lexus LS400, this Oil Pan offers superior reliability and ease of installation for anyone. By billydpowell December 16, 2010 in 90 - 00 Lexus LS400 Lexus Model: 1999 LS400 White; Year: 1999; Location: Texas (TX) Author; Posted December 18, 2010. So low the car begins Just bought a 94 ls400 w/130,000 miles and she idles at 1200 rpm so I can't go thru emissions. 21. A low idle in gear or out would not be caused by a fuel filter being clogged . Hi, My 96 LS400 seems to idle at about 400 RPM (the second tick mark from zero). SUMMARY Symptoms: Gradually increasing car hesitation, power loss, sluggish acceleration, lowered fuel economy. Dezember 2020 in LS 400. Cause (probable): Dirty fuel injectors, dirty engine valves, and combustion chamber deposits Fix: Chevron Techron Concentrate Plus (or similar known PEA-containing (polyether amine) fuel system cleaner products like Gumout Regane, Redline 1998 LS400 110k mi. Sign in with Facebook. Idle at 1200 to 1400 is normal until coolant warms up. com/robnzackgarage?utm_medium=copy_link Customer: I have a low warm idle of 400 rpm in neutral with no accessories on. 5, and slowly climbs up to 14. keep it at 1000 rpm for 30-45 seconds and then slowly Depending on how much you took off it might not mate properly now (sits too low). InsideTheBox · Started December 9, 2024. Avoid running the engine Specially designed for the 1999 Lexus LS400, this Catalytic Converter offers superior reliability and ease of installation for anyone. Discount Auto Parts and Accessories Low Cost From $220. I can start air and it will build up the idle and stop when it is less than 1 slot on the rpm, if i turn air off , it idles back down. Boating; Motorcycle; Powersports; RV / Camper; Lexus SC400 1999, Idle Air Control Valve by WVE®. 0L V8 > Fuel & Air > Idle Air Control (IAC) Valve. Sign in with Google. When I let the engine return to idle (around 700 rpm), the voltage returns to 12. Other Name: Bearing Race, Bearing Spacer, Pin Replaces: 28228-01020 The IAC, Idle Air Control, provides the method whereby airflow bypasses the CLOSED throttle valve to supply enough airflow for keeping the engine at idle RPM. Idle • Rough idle. 1996 ls400 last week poor idle, running rough, then crank no start, had towed home. After my SC is warm and i come to a stop it seems to be idling just under 1000. 90 - 00 Lexus LS400 ; Surging Idle While In Gear Theme . By Quack11 August 18, 2009 in 90 - 00 Lexus LS400 I purposely waited until the low fuel level light was on before refueling, could it be that i've picked up residue and may have a clogging problem with inturns create a fuel starvation problem? Any ideas 1990 Lexis LS400 engine idle speed car starts up and runs at normal RPM untill it reaches operating temperature but - Lexus 1990 LS 400 question 2009 • 1999 Dodge Intrepid. 9. So far in attempt to fix this problem I h Below 500rpm in Drive, while warm, with no accessories on. Cookies; Our website provides an extensive catalogue of genuine 1990 Lexus LS400 Idle Control Valve at competitive prices. Your Choice of Quality. You need to remove the low pressure return pipe and 3 bolts holding it to the pump. I'm guessing it's the power steering pump or the transmission fluid pump. 1,978 Satisfied My '99 LS400 had developed a whining noise when idling. Von MilkoLS400 13. The threads I've read indicated that it was an ECU programming proble Jump to content. The low idle speed problem is so common among the earlier LS400s. Although, it was cold. 0 helpful. Cookies; Lexus Owners Club of North America Powered by Invision Community. 79: $0. Idle speed Very low, how to correct ? J. Posted October 8, 2011. The whole way home it was missing and just had no power when i come to a stop it If your 1999 Lexus SC400 is suffering from a throttle body related performance problem, we have complete assemblies as well as components to make the repair. As soon as it warms up it’ll do this bogging thing. Thread starter mervinjules; Start date Dec 7, 2008; The 1UZFE EGR Delete Kit is available for sale here. Check prices & reviews on aftermarket & stock parts for your 1999 LS400 Fuel Injection Idle Air Control Valves. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European Lexus LS400: how to disable vsc on a 1999 lexus ls400. My car is 1994 LS400. risingsun. 90 - 00 Lexus LS400 ; Cleaning Idle Air Control Valve Theme Check us out on Instagram:https://instagram. 1999 GS300 ; Posted October 3, 2005. There doesn't seem to be any locking pin as shown What would cause my 99 ls400 to idle around 1100 rpm already checked for vacuum leaks a commen problem that we see alot on toyotas , which make lexus , is that the idle air control valves fail and the car has a very bad time starting when cold , or in cold weather , the fact that you said the car was idleing very low is a good indication that you have a bad idle air control valve also when you request the ac on the i. 2, . Battery indicator light stayes on for 5-6 seconds after start up the goes out. Car in park or neutral at low idle, I hear light knocking. Find Repair Location 2000 Lexus SC400 Rough Idle; 1999 Lexus SC400 Rough Idle; 1998 Lexus SC400 Rough Idle; 1997 Lexus SC400 Rough Idle; 1996 Lexus SC400 Rough Idle; MY 96 Ls400 is overheating when idle. 0L V8 1UZ-FE FI Naturally Aspirated GAS: Upstream; Right: Upstream Right: 1999 Lexus LS400 : 4. 7) Cleaned idle Our website provides an extensive catalogue of genuine 1993 Lexus LS400 Idle Control Valve at competitive prices. any suggestions or place Fuel & Air Parts and More for Your 1997 LEXUS LS400 at Reliably Low Prices. And no check engine light. The idle speed had been Idle Air Control (IAC) Valve: Intentionally blank: Intentionally blank: Related Parts. Once the temp rises to normal operating temp, the idle becomes erratic on the low side, stalls and dies. You need to be a member in order to leave a comment. Sitting dead on 600 rpm at idle in drive 90 - 00 Lexus LS400 ; 99 Ls400 Idle Problemsplease Help! 99 Ls400 Idle Problemsplease Help! By ISRydr February 25, 2012 in 90 - 00 Lexus LS400 The only times I've had the engine in my similar 2000 LS400 die at low speeds or when coming to a stop has been when a battery has begun to fail. curiousB. im all out of options even the dealer On my 91 lexus ls400 , along with the high idle until the car warms up, when I turn the air up it idles back up to the same level as when you start it in the cold. However, lately, sometimes it will idle around 400 or its either a vacuum leak, the intake is cracked agian, dirty/bad idle air control valve, or a bad throttle position sensor. blake, Just called local independent lexus shop - they are very good - this is what they say: Since you've said that the problem goes away after warming up (low 700 idle) - this seems to hit the nail on the head!!! 90-94's had lower ( 1300 rpms on startup) as does my Gen III ( 98-00) which has 98 LS400 extremely low idle 98 LS400 extremely low idle. I mean the poor acceleration after turning the corner then the sudden Last Saturday, I got part way into the TB/water pump replacement on my '99 LS400 before I had to put everything on the back burner until today. For Sale SC430. When I search for my So I've had my 1994 LS400 for a year now, and it's suffering from sluggish acceleration (takes 14 seconds to get from 0 to 60), and it pings when cruising at 1200-1400 RPMs. If the cable is too tight, the it is CRITICAL that the replacement caps be low ESR type and from one of the brands listed above - don't cheap out on your vital ECU! Throttle body cleaning is normally the first thing to check/perform when you have an idle issue but worth making sure vacuum hoses are in good condition and that you can't Just recently I started experiencing issues with my idle. Now its perfect. $925 - $972. Part Number: 28228-26040. It runs super strong 95% of the time, but I've had an intermittent misfire issue. trot · Started 13 hours ago. 18,127 Satisfied Customers. The VSC light comes on along with the check engine light but the car continues to run fine. The idle is rough enough to feel the car shake. The Idle Control Valve is a vital component which continues a smooth idle rate for your car's motor and is typically fine-tuned by a control computer. Lean exhaust is Low Voltage; below . It looks like it idles at around 200 rpms in drive and 400 in park. 67: Customer: 1996 LS400 will not blow warm air inside at idle. 00 + 90 - 00 Lexus LS400 ; Inconsistent Idle And "reving" Inconsistent Idle And "reving" By sgretchko May 3, 2010 in 90 - 00 Lexus LS400 it could have been a slightly low battery creating ECU sensor problems,low fuel pressure or maybe condensation in the inlet manifold all due to being stood for some time. Equip cars, trucks & SUVs with 2000 Lexus LS400 Idle Air Control Valve from AutoZone. 90 - 00 Lexus LS400 ; 90 Ls400 Sputtering/rough Idle/no Power/ Misfire Theme . The fuel pump is new, pressure was tested as good by a local shop. This Idle Control Valve is electrically controlled I takes instruction from the engine control unit so as to Your throttle body may need cleaning if the idle is too low. This idle relearn procedure works on Toyota and Lexus, with the 1MZ engine experiencing low i power steering idle control valve is often the culprit for leaks, look it up on google and you can find tons of people on clublexus with similar problems. Chris (aka At idle and low speed. I'm new here Philip G · Started Tuesday at 05:02 PM. Have you, or past owner, changed the original timing belt? VBdenny. Boxer54. 0L V8 1UZ-FE FI Naturally Aspirated GAS What's up everyone?I went today to look at a 1991 LS400 with 185. The first thing I would do is remove the hose connected to the intake and see if there isa lot of blackish brown buildup on the plate, if there is you need to buy some top engine cleaner and with a tooth brush clean the throttle plate on the back side and also the pipe that it sits in. 1990 LS400 Parting Out. 1992 lexus ls400 has low, rough idle, extremely slow acceleration. bad idle frosting change water filter 160 changing air Specially designed for the 1999 Lexus LS400, this Timing Belt offers superior reliability and ease of installation for anyone. It wouldn't start unless I held foot partially on the gas pedal, and I'd have to use the pedal to keep it from stalling a few seconds (hot, or cold, didn't matter. . All OEM 1990 Lexus LS400 Idle Control Valve we offer are backed by the manufacturer's warranty, assuring you of their quality, reliability, and durability. If the oil pressure light only comes on at idle or low RPM then the oil pressure is probably low at those times. Normal high idle (when engine is cold) After a few seconds it dropped down to about 600rpm and then back up to a high idle again. Existing user? Sign In 90 - 00 Lexus LS400 ; Low Idle Speed Low Idle Speed. Share Your engine has a throttle control motor aka idle speed control (ISC) motor. I have a 91 Lexus LS400. 5k First Name: S; Lexus Model: 94-ES300 98-LS400 03-GS430; Year: 2008; Location: Ontario; Posted The most common reasons a Lexus LS400 has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. paulo57509. 92 sc400, obviously when you first start a cool or cold car the idle is higher than normal opperating temps. 000 miles on it. I am lost with the low idle. All OEM 1999 Lexus LS400 Timing Belt we offer are backed by the manufacturer's warranty, assuring you of their Lexus LS400 Idle Control Valves serve to assure mandatory engine idling. All OEM 1997 Lexus LS400 Idle Control Valve we offer are backed by the manufacturer's warranty, assuring you of their quality, reliability, and durability. It was sometimes below 300rpm or less at D. Community Supporter; 255 First Name: Paul; Lexus Model: LS400 A malfunctioning throttle system can cause both a high or low idle as well as an engine 1992 sc400 A few months ago, It developed a starting problem. Start here! Avoid prolonged idling. Do this outdoors! Be careful! 90 - 00 Lexus LS400 ; 92 Ls400 Rough Idle After Replacing Starter Theme . also this maybe related when I am at a stand still I turn on the a/c somet 94 LS400 115K 96 SC400 166K the idle speed on both cars are around 500rpm. A. The car went on a 400 mile road trip and has been driven occasionally during the week since late July. The high revs are me on the gas. Replace your worn-out or faulty component with this quality replacement from WVE. if the idle is that low is because the TPS sensor is sensing a throttle plate partially Pressure at idle have to be 43 psi or more. The oem plug wires are only two years old. It was consistent. mervinjules New Member. Anyone know what i can do or whats causing this??? I myself have a very low idle and have yet to figure it out what is causing it. Carsie. ASE Master Certified Tech, L1 Certified, CA. $194. How do you remove the drivers side windshield wiper on a 1991 LS400. Hello everyone, this is my first post so please excuse me. Close. 5vdc. Prices may vary depending on your location. Bolt size is 1/4-20, about half a Thanks to our low-priced and massive inventory, it’s easy to find the best 1999 Lexus LS400 rims for you! No matter the size, style or finish you’re looking for, we have the Lexus LS400 wheels you want. I am receiving 2 codes one being p0100 and the other p0403 Usually idle issues Hello everyone, my name is Martin and I am from Germany, reading on this Forum for quite a while, I decided to get active due to a tech. 00 up to over $700. By Dom2002 September 29, 2023 in LS 400 / Lexus LS 430 / Lexus LS 460 / Lexus 600h / Lexus 500h Club but that is more related to the LS400 rather than LS430. ( I said 90 - 00 Lexus LS400 ; 1999 Ls400, How Do You Replace Acceleration Pedal Positioning Sensor 1999 Ls400, How Do You Replace Acceleration Pedal Positioning Sensor Idle however is very rough and real low, which (correct me if I'm wrong) is related to the defective coolant sensor or bad wiring connection. Contact Us: Live Chat or 1-888-352-5786. Nevertheless, after starting, your idle should start descending in a few minutes, depending on what the ambient temp is, to finally reach a resting idle of ~650. 4vdc) Lean would indicate a Vacuum Leak. 1999 ls400 wont idle. AutoZone Locations; Vehicle Make; Vehicle Model; Shop All Brands; Vehicle VIN Lookup; Idling at 700-900rpm means cool air that gets continually colder. track your order. By grandpa_spec98 May 13, 2022 in General Chat Share So my question is, could the throttle position sensor have to do with my low idle, or did it trigger a Car in gear at low idle, no knocking. It of course makes for a rather rough/vibrating idle until the car warms up. Then Lexus Model: 1999 LS400; Posted June 14, 2004. This morning start up ran fine 5 min. Found a leak for sure, going to redo the trans pan but this time with a gasket. it has to do with the idle up air bypass and the power steering for low idle , it is not a big problem but is not simple to fix , no diy. 0. 5k RPM+. 6. where is the neutral safety switch on a 1999 Lexus LS400. I had the same problem and I adjusted the linkage on top of the throttle body or just simple tightenend it up to pull the idle up. All OEM 1999 Lexus LS400 Fuel Injector we offer are backed by the manufacturer's warranty, assuring you of Lexus Model: 1999 LS400; Year: 1999; Posted March 16, 2011. 2ard. After the cleaning, the idle went up to 550rpm. Engine symbol is. 0 % 34% of the time it's the My 1995 Lexus ls400 heats up at idle, I have replaced fan clutch, thermostat, water pump, flushed radiator (and washed fins,condensor) , AC fan is working, gets air above thermostat at filler port, replaced overfill tank. 2008. The RPM rate was so low it would cause the oil light to come on because it wasn't pumping it fast enough t 90 - 00 Lexus LS400 ; 1992 Will Not Idle 1992 Will Not Idle. Starts and runs fine when cold. But now I idle so low that the engine will die if I'm sitting at a stop light and turn the A/C on. VBdenny. I'm not sure if the LS430's have the same capacitor issues as the LS400 but I remember some I have a 1992 Lexus SC400 that runs flawlessly except for one problem----The idle speed does not stay constant. Thanks Well some of you may have seen a few of my posts on here, My family has 3 LS400's (95-97 generation), and I have learned a lot thanks to this forum, and from some of my own trouble shooting, and I thought I would share Get the wholesale-priced Genuine OEM Lexus Starter Drive Gear for 1999 Lexus LS400 at LexusPartsNow Up to 33% off MSRP. Ls400. e. car would shut off when wires touched. If pressure reading is ok, take a look at your pressure switch. This doesn't seem to cause any problem, but isn't 400 way too low even for a V-8. (. at idle). 3. As of late, I have been experiencing some low idle speeds, but most important, it has been "conking-out" on me at complete stops. On a big service on my car I Just got back from picking up the wife's LS400, after she'd gotten a ride home. 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