When I sit at a stop lite my idle speed is really low and sometimes my car sounds like its going to shut off. Is it possible its the IAC?
Sep 21, 2015 at 5:38 PM
1998 Mercury Tracer idle speed low
1998 MERCURY TRACER
JWARRIOR319
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The idle air control valve (IAC) is responsible for maintaining engine idle speed. So yes, it could be the problem. Also, an engine vacuum leak can do the same thing.
Sep 21, 2015 at 5:58 PM
How do I check for a vacum leak?
Sep 22, 2015 at 4:15 AM
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The safest way is to simply open the hood, start the engine, and see if you can hear any hissing sounds.
Other than that, you can use a vacuum gauge to see if the vacuum is low or weak at the intake which would indicate a leak. Other than that, many people use carb cleaner and spray it around all the vacuum lines. If there is a leak, the engine will either rev up or want to stall.
NOTE: Carb cleaner is very flamable. You must use caution if this technique is used.
Other than that, you can use a vacuum gauge to see if the vacuum is low or weak at the intake which would indicate a leak. Other than that, many people use carb cleaner and spray it around all the vacuum lines. If there is a leak, the engine will either rev up or want to stall.
NOTE: Carb cleaner is very flamable. You must use caution if this technique is used.
Sep 24, 2015 at 5:37 PM