What could this be??
03-13-2006, 05:42 PM
#13
3rd Gear Member
Thread Starter
Join Date: Mar 2005
Location: Memphis
Posts: 627
RE: What could this be??
Fuel injected Mustang uses a small motor/valve assembly that allows a specific amount of air to enter the engine to control it's idle. When you start the engine, this valve allows are to move around the throttle body plate.
Some symptom's of a failing or failed IAC are:
your idle rises and falls over and over again.
Stalls when you come to a stop, or even when you put it in gear.
The problem usually arises when the car gets some miles on it (usually 75K+) and carbon fouling takes its toll.
What happens is dirt, excess air filter oil, and most notably carbon gunks up the IAC valve and doesn't allow it to either open or close properly. This can cause an really high idle, a lumpy/surging idle or no idle at all. The solution is to either replace or clean the IAC.
Some symptom's of a failing or failed IAC are:
your idle rises and falls over and over again.
Stalls when you come to a stop, or even when you put it in gear.
The problem usually arises when the car gets some miles on it (usually 75K+) and carbon fouling takes its toll.
What happens is dirt, excess air filter oil, and most notably carbon gunks up the IAC valve and doesn't allow it to either open or close properly. This can cause an really high idle, a lumpy/surging idle or no idle at all. The solution is to either replace or clean the IAC.
now i know