Chrysler Repair Questions? Ask a Mechanic for Answers ASAP
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Did you also check ALL the IAC wiring for short to each other? We see this problem a lot because of the harness being taped together so tightly, over time, then insulation of the wires begins melting and the wires can actually touch each other through the insulation... What needs to be done is to actually open up the harness where all the IAC wiring runs through from the IAC as far back as possible and including all the way to the PCM if possible. These wires will need to be actually separated from each other, be careful not to tear the insulation when doing this, inspect wires carefully and tape any suspect areas, or repair if necessary by adding in new wire... then LOOSELY retape the harness wires and reinstall convolute sleeve and carefully route the wires properly as to avoid any future problems....
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Correct, If you disconnect the connectors on both sides of the circuit and test with an ohm meter, you SHOULD be able to tell if they are shorted together. Although, I have in the past, done this and STILL had a problem, so it may still be necessary to separate all the wires to be sure.... The problem is, sometimes, when wires are cold, the contact doesn't quite happen, once the engine is warm, it softens the insulation and at that time the wires may begin actually contacting each other......I have ran into this several times in the past.....
Let me know if you have any luck with this....
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Hi, on the unrelated question, if you want to open a new thread, You can always request me through my profile at http://www.justanswer.com/car/expert-Robertr/ Begin your question with “Robert R" so I will be able to easily find it... OR you can just ask me here if you like, I have no problem with that....
As for your results, after testing the IAC with the KOEO, did you reinstall the IAC and see if the light comes back on?
There should be no issue with the IAC ports being slightly carboned up, you may remove the throttle body and try blowing compressed air through all the ports just to be sure there is no blockages. Although the P0505 directly refers to the IAC circuits, not necessrily if the IAC is sticking or something.
Is this a new PCM? or remanufactured that is installed in this vehicle? Where did you purchase it?
Cool, let me know what happens, If it happens to do it again, the next step will be to do the wire separation procedure. The problem may still lie in this area...
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PS, I have replied to the Sebring question.