courtesy of Bob, The Auto Answer Man
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
Have a car care question? Visit our automotive center and see if we've already answered it or a similar question.
Take the Next Step
- Reduce the cost of your gasoline with a 'gas card'. You can compare them here.
Also in Home
- 5 ways your house can make you go broke
- 5 simple and affordable luxuries for your home
- 12 ways to lower heating bills
- Will my insurance spike if I rent out my basement?
- Why pay extra toward mortgage principal?
- 5 tips to sell a home before buying another
- 6 ways to stock your "man cave" for under $500
- 6 home projects that don't pay for themselves
- Should I refinance my home equity line?