I have a 1997 Ford Mustang GT.

The car will not idle at all right now.

This seems to be a temp issue, because it all started happening here a week or
two ago, when the weather started getting cooler. After the car warmed up
the car would idle correctly.

But yesterday the car started okay and ran okay, then the weather turned cooler
and started raining. The idle issue returned.

I have not been able to get the car to idle since.

I have had the auto-parts places put there computers on it.

No Codes are showing up, and the check engine light is not on either.

The auto-parts places think a sensor has gone bad, but they don't know
which one since it is not showing a code.

Does anyone have any ideas?

The local ford place, wants to charge me $120.00 dollars to take my car
in to run their computer on it. But if it is not showing any codes, how are they
going to fix it?

Help!

Mike

 

hmmm Do you have mass air flow?

 

first thing to check is the IAC, clean it or replace it

 

what upgrades have you done to the car?? weather always changes the way your car runs. there was a guy that came to the dyno and said the same thing... after putting it on the dyno, we found out that it had too much timming and was running lean because of the cold weather.... like MD said, check your iac first...

 

jdaniel - I have a mass air flow. It looks okay.

mdvaldosta - No, I have not checked the IAC, I will try that tonight.

WHTOOGT - No, I haven't done any mods to the engine.

Thanks,

Mike

 

If the IAC doesnt work for you try looking at the Mass airflow sensor. Sometimes just the smallest amounts of water will throw that off when it gets inside and will funk the idle all up and make you burn really really rich.