Question about Chrysler Concorde
Couple things to check out. what is the throttle position sensor readings fully closed (should be .5volts). if it's above the pcm may think the car is not at idle. did you spray sections of vacuum lines and manifold gaskets with brake clean to check for leaks? (when you hit a leak the rpm will increase). do you have a scanner? what are to fuel trims? (short term fuel trim and long term fuel trim). are there any engine codes remaining? did you try to disconnect the battery for 15 minutes, reconnect and have the pcm relearn since all the parts were changed?
Posted on Jun 26, 2009
It definitely sounds like you are having problems with your IAC valve. I would check the wires but I would bet that you probably just need to replace your IAC valve (however you can try to clean it but it doesn't cost much to replace, you can try cleaning just to see if it helps and then replace it). I would be very surprised if that doesn't fix it for you. Let me know if you have any other questions. Thanks for using FixYa!
Posted on Jun 23, 2009
What i have usually found Vaccuum Leak to be the main reason. However, as you have already checked the same, there is no point discussing that. Now,
Clean the throttle plate (both sides), the throttle body throat, and the idle air intake hole, and check the throttle linkage. Make sure the throttle closes all the way without binding.
Then check the brake booster vacuum hose and any other vacuum hoses you can locate: use the underhood sticker as a roadmap to trace all the hoses out. Check the pcv valve for function. The 'fuel purge' has to do with the evaporative emission system hoses, which are shown on the underhood sticker. That is a subset of the general issue of vacuum leak.Then check the idle air control motor connector and harness.
clean the throttle plate (both sides), the throttle body throat, and the idle air intake hole, and check the throttle linkage. Make sure the throttle closes all the way without binding.
Then check the brake booster vacuum hose and any other vacuum hoses you can locate: use the underhood sticker as a roadmap to trace all the hoses out. Check the pcv valve for function. The 'fuel purge' has to do with the evaporative emission system hoses, which are shown on the underhood sticker. That is a subset of the general issue of vacuum leak.
Any further help, let me know.
Thanks for using "Fixya'.
Posted on Jun 19, 2009
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Posted on Jan 02, 2017
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