Weird noise/squeek from engine bay

[HoustonGT]

Hey guys. Got an issue with the GT right now. It was very small and quiet and still is but im sick of hearing it. Its a weird noise. On a start-up (usually cold start) the car kind of clunks and squeeks as it turns over. Also occassionally about every 10 seconds you can hear this squeek that comes from seems like the engine bay sort of from the middle right. It gets worse like when i press the window buttons and the rpm's drop. Also a bit more noticable after running it hard. And when i shut it down it also kind of clunks and squeeks as the engine stops and i feel it through the seat a bit and stuff. Its definitely coming from the engine itself.Any clue? Also, from the bottom right i of the bumper i here like what sounds like a bad bearing squeek of a pulley...I have replaced my idler pulley, belt tensioner and pulley, and belt. Any idea what it is? AC Clutch/Pulley, Alternator?

Thanks In Advance
Mike,
SEMPER FI

 

[Malevolyn]

I'd say a/c pulley. When mine died, it started made a weird clunky squeak when I turned the key and prevented the car from starting. And it's over on the passenger side, where you said the sound comes from. Try turning on your a/c and see if the sound gets louder or anything.

 

[HoustonGT]

I'd say a/c pulley. When mine died, it started made a weird clunky squeak when I turned the key and prevented the car from starting. And it's over on the passenger side, where you said the sound comes from. Try turning on your a/c and see if the sound gets louder or anything.

Yea i had suspected thats what it might be. Should i just get the one from autozone or will it be better to get the original Ford part?