Cold engine idle problem

[jm49hill]

hi.. I need some assistance. My wife's 2001 Mountaineer Premier 5.0 has an issue when the motor is cold. It won't idle until it gets a few minutes of running. It's been happening for about 6 months ( intermittently ).. I've never experienced the problem until yesterday. After about 2 minutes while trying to keep the motor idling about 600 rpm's I heard a mild pop under the hood, then the motor idled fine. Since the weather just turned a bit colder, this was my first opportunity to hear the pop, which my wife has described for months, but I just didn't believe her until I heard it. We are about to go on a trip to northern Minnesota for Thanksgiving, so some pointers would be greatly appreciated.

thanks..
bye the way, I just found this forum.. wish I was involved in it earlier

 

[Turdle]

Welcome to the site.
Have you tried cleaning the Maf sensor?
Give that a shot, It may help

Which kind of air filter do you use?
Thread moved to stock 95-01 forum

 

[philo]

i had the same problem. dealer hit me up for cleaning injectors, engine flush/oil filter change, etc. $800!

50k/miles on the 5.0.

shoulda used the seafoam and changed the oil/filter/plugs. aaah!

 

[NHale623]

After about 2 minutes while trying to keep the motor idling about 600 rpm's I heard a mild pop under the hood, then the motor idled fine.

Sticking IAC valve?

 

[JDraper]

Sticking IAC valve?

That would be my first thought....Ford's IAC's are notorious for failing...

 

[aldive]

Same here.

Good luck ..........

 

[slpdave]

I agree with the last three posts....IAC, easy to clean for a temporary fix.

David