Alternator pully getting hot.

[0393gt]

Put a new remanufactured alternator on it from O'reilly's. Car runs fine but the pully is getting hot enough to start melting the belt. Could it be a bad part, I've heard of people getting these and they don't work correctly. Spins freely by hand with the belt off. 86 gt, stock alt.

[KBScobravert]

How tight is your belt?

Take the alternator back.

[Denny]

Ya, definitely take it back. Maybe a bad bearing?

[0393gt]

The alternator itself is not getting hot. Battery voltage 12.6 and 14.4 with the car running.

[mstng86]

Sounds like the pully on the alternator is not spinning. Or wrong size pulley?

[Mysticcobrakilla]

Could the pulley be spinning on the shaft?

[Denny]

I'm thinking it might have a little too much drag, causing it to slip just on that pulley. More friction.

[0393gt]

I think the pulley is too small the belt was touching itself under the tensioner pulley

[0393gt]

I put on my old belt that I knew wasn't going to touch in that spot. It was maybe 1/2 and inch from itself, took it for a short drive and its almost touching again. Pulley not as hot though. That friction was causing the alt pull to get hot

[talisman]

Is everything factory on the car, or does it have smog removed, underdrive pulley's, etc?

[0393gt]

Smog removed. I think I just need a shorter belt meow.

[Denny]

Smog removed. I think I just need a shorter belt meow.

That's only nine.

[351Coupe]

It requires a different belt, but you can route the belt from the alternator to around the crank first then the water pump and it won't touch itself anymore.