I have a squeek when i first start my car or turn on my air wtf.
I tightened the belt tensioner and it went away but now its back. What do i need to do?

 

Either get some belt dressing (they sell it at most auto parts stores to stop belt squeek) or you need to replace the belt.

 

belt pray..(i think that is the belt dressing mtrai is talking about). or its a sign your belt is about to go.. look at the belt. see alot of cracks and tearing rubber..time for a new belt. put in a UDP while your at it if u ahve to replace the belt.