Before I bring my wife's 1998 es300 for an idling start up problem, I'd
thought I'd try and get some advice.
Basically, her car will start, but dies as soon as you take your foot
off the gas pedal. It seems driveable, but you have to keep the rpm's
up by throttling it, which can't be good.
Is this something like a relay or fuse that I can replace myself? My
*very* basic instincs tell me this is probably electrical related but
my remedial highschool auto power experience keeps me from accuratley
diagnosing it. I am, therefore, at the mercy of a Mechanic.
Any thoughts, advice or experience is greatly appreciated.
Exactly the same problem on a 1997 Neon. Have used throttle body and IAC spray cleaner without taking the car "apart".
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Re: advice on idling problem
Misrouted, damaged, loose, or clogged vacuum hose(s)
Worn, defective, or faulty choke pulloff(s).
Leaking, worn, or damaged intake manifold gasket
Stuck or improperly functioning chokeadvice on idling problem - grey_line.gif
Carburetor/Fuel Injection Gsk
Deteriorated, or faulty caradvice on idling problem - grey_line.giftle valve mounting gasket.
EGR Valve advice on idling problem - grey_line.gifrty or improperly functioning or defective egr valve.
Idle Speed Control Actuator
Damaged, loose, or faulty idle speed actuator.
Idle Stop Solenoid
Damaged, loose, or faulty idle stop solenoid.
Throttle Position Sensor
Faulty throttle position sensor or throttle position sensor circuit. here the answer to ur problem use autozone.com if this does not workor u need more info here to help Shaun
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I would seriously recommend bringing it into a Certified Lexus Dealer, there the Technicians will have most likely accoutered the issue before and have an accurate and precise diagnoses, for your ride issue.
make sure you reassembled the throttle body properly you could have damaged the throttle body do you have a manual adjustment at your throttle body access point check for proper movement of the throttle body as well as clearance of attaching parts
If car wont start and clicking sound is heard this is a battery related or starter related, if your car battery is in good condition (which I think it was) then the problem is your starter, have it check to confirm.
I looked it up on AutoZone.com and it looks like there is only one coil. You can verify that by giving them a call. However, to me it sounds like you might be having a problem with your idle air control valve. Since you are only having problems when the vehicle is at idle I would take a look at your IAC. It is located on the throttle body and is usually held on by two screws. When the IAC starts to go bad you will have problems with the vehicle when idling. Let me know if you have any other questions. Thanks for rating my response and for using FixYa!
I had a similar problem. My 1998 Lexus ES300 wouldn't start. I had to change idle control valve. I don't have such problems ever since. I read that many used Lexus/Toyota owners had the same problem with that valve.
I have fixed my problem with my car idling rough and stalling. I took off the intake manifold and all the intake hoses and vacuum lines. I cleaned everything with carb cleaner. I couldn't believe how dirty it was. Especially the plastic vacuum component that went from the valve cover to the intake hose. It was full of oily foam. I also took apart the electronics that control the throttle at idle. I wouldn't recommend this as it is very expensive if you mess something up. You have to file off two tabs to get it open, and I cleaned the contact points and checked the connections inside.
It has been about a month now and the car has been idling great, in fact it is running better than ever. I also found that the number one spark plug was arcing out through a small crack in the rubber boot. I used electrical tape around all the spark plug caps because the wires were only one year old, and apparently I had torn the rubber during re-installation and wires are 100 dollars.
I would highly recommend cleaning the entire intake track off the car to anyone who has this engine! It did wonders for me. I only wish I had done this before I replaced the MAF which cost 150 dollars and didn't fix anything.
On the down side, I now have a problem with my temp sensor or cooling system. :-( VW, not sure they are worth it sometimes. I guess I've had too many Hondas in the past. And I only have 115,000 on the Cabrio. Good luck everyone.