When I floor the gas pedal, the tranny drops to first like it should. But during the transmission shift from 1st to 2nd, the belt (maybe something else) makes a brief squeak. Kind of like the squeak a belt makes when it's going bad and needs to be replaced. But I just replaced it. And it used to do it before I put a new belt in it. I guess my engine is reving so much, the belt can't keep up with the rpm the pulleys are making... i guess. I'm pretty sure it's the belt. I just wish I knew exactly why and what I can do to fix the problem. Anyone have this happening? Any suggestions?

- Joel

 

Try readjusting it. If it has an automatic tensioner just loosen the bolt the retighten it and it should be adjusted properly. I think you are supposed to have like 3/8" deflection over a 12" area. New belts usually do loosen up after 30 minutes driving.

-Jon

 

Did you use a higher quality belt???If it doesn't quite down then check the tensioner to see if it is holding proper tension....

 

My '99 5.4L started doing this at around 1.000 miles when I started firewalling the pedal for the first time. Dealer changed the belt and found one of the pulleys out of alignment (so they said). Hasn't squealed since.