I have a 2000 Mustang GT and just got it back from the dealer after they worked on it for two weeks. They replaced the IAC valve, but I noticed it was idling erratically with the A/C on yesterday. I didn't notice it while driving. However, when stopped at lights, the engine would drop from the normal 800 RPMs to about 500 and then surge to 1200 when it started to stall. Any idea what the problem is?
It's possible that either:
1) There is a vacuum leak.
2) The map sensor is bad.
3) The IAC is bad.
4) They did not give the car a sufficient learning cycle to learn how to operate the new IAC.
Bob, The Auto Answer Man
If you have a question for Bob send it to: . He's able to answer many of them personally and we'll include the best questions in future issues of The Dollar Stretcher.
Take the Next Step
Sign up for our free weekly eNewsletter Surviving Tough Times.
Looking for an answer to a frugal living question? Click here to ask a
Dollar Stretcher Stretchpert!
Copyright 1996 - 2013 "The Dollar Stretcher, Inc." All rights reserved unless specifically noted.
Contact the Dollar Stretcher at:
PO Box 14160
Bradenton FL 34280
"The Dollar Stretcher, Inc." does not assume responsibility for advice given. All advice should be weighed against your own abilities and circumstances and applied accordingly. It is up to the reader to determine if advice is safe and suitable for their own situation.