[rmoore0323]

when i start my car in cold it makes a high pitch whistle and stays on till i hit the throttle, and then returns when let off gas. what is this sound? any answers.

 

[mwrenn]

Well, it's gonna be either in the intake or exhaust, probably intake. Should be pretty easy to locate. Have you started it with the hood up and listened?

 

[moparfwdsleeper]

pop the hood, found the loudest point of the whistle and you probably have it! Im guessing alternator... When they start going bad they are loud as hecks!

 

[rmoore0323]

would it only start in the cold

 

[moparfwdsleeper]

pop the hood and do some investigating, that's the best way to locate the noise.

 

[speeduphoria]

sure its not a belt squeek? My next guess would be the TB, just take it off and clean it good

 

[85lebaront2]

Check the gasket between the throttle body and intake. If it leaks, it can make a high pitched squeal that will go away if you open the throttle. If it is there, may sure the body isn't warped.

 

[tryingbe]

Could be alternator bushings too.

 

[Blue Iroc R/T]

+1 on the timing belt. Belt may be TOO tight. If so, and you don't get it corrected, it won't be long before the oil pump shaft goes.