I have a 2002 Mustang with 3.8 and the engine won't idle in cold but
will run & drive fine after the engine is FULLY warmed up. I can't sit
in the car every morning and wait 10+ minutes for the engine to fully
warm up (we live in northern Michigan) Can anyone speculate what is
causing this ?
Dirty/gmmed IAC. Best fix is usually replacement but, they
can sometimes be cleaned by removing and soaking valve end
of unit in solvent. It takes about 10 minutes to replace if
you have an 8mm socket and ratchet. It is located on side
of throttle body.
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