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Discussion Starter #1
ok it just started...

now that its cold out when i drive while its not completely warmed up i hear a LOUD like screech...almost like static in a microphone (usually happens at around 1800 k or so

but when the car warms up it goes away

what the hell is that noise and what is making it?
 

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Maybe the belt is slipping?
 

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It's probably the idler pulley, I read in a service bulliten that the bearings go bad and it squeels in cold weather. Mine was doing it last winter. I pulled mine off and sure enough, the bearing was binding. I replaced it and the noise stopped. It's cheap ( less than 15.00 bucks ) and easy to replace. Just remove the belt, unbolt the pulley and change it, then replace the belt. A 10 min. job. I tried shooting WD-40 on it for a while, but just made a mess and the noise returned after a day or two. So that 's what I would check. And like FordMan said, if the belt is slipping, check the belt tensioner. Now mine is starting to make a little noise with these extremely low temp.. Good Luck
 

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Mine is doing the same thing as well in cold weather... very loud screech for a few seconds... then it stops after it idles for a minute or two. Figured it was belt/pulley related. Now I know :)
 

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There's two pullies that usually squeak over time.

The idler pulley and the tensioner pulley.

Ford sells an improved pulley that fits both locations, and the pulley costs around $11 from Dan Newman.
 
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