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Discussion Starter · #1 ·
I put a new AD244 alt on my truck and it runs good but when my compressors turn on a loud sqeak comes from the pulley and the voltage drops. I think it comes from the alt pulley. Only when the compressors turn on though. Anyone know why? It's a brand new alt. Anyone? Thanks!
 

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How is the belt tensioner marks looking?

either way, the belt is slipping causing the squeak.
 

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Discussion Starter · #5 ·
So the belt may be too long??? But why only the sqealing noise when my compressors come on?
 

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because when the compressors turn on, they make the alternator work harder, therefore making the alternator harder to turn and making more tension on the belt.
 

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Discussion Starter · #8 ·
So i think i got it. Got a shorter belt and so far it's good. Runs good with everything on and no squeaks. Tensioner is in same spot as previous belt. Thanx all!
 
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