Installed underdrive pulleys, got a ?

RobStang · 02-26-2003

I just installed MAC underdrive pulleys in my 94 GT. Now I here a slight

whine/belt squeal, coming from I believe the alternator. Could my

original belt be too streched out causing this? Do I need to get a

different belt size (MAC says use original belt). Anyone else have

problems or comments?

NoSlow5oh · 02-26-2003

yep, mine squeaks half the time. don't know what kind they are either. some people say that a certain brand does that. when I start getting annoyed at it I just spray some wd-40 in between the belt and pulley and that takes care of it for a little while.

X1Lightning · 02-26-2003

I would Check the alignment of the belt on the pullies.. sounds like it may be off alittle bit..

Adam Vogel · 02-26-2003

I have underdrive pulleys which i took off and havent put them back on. I heard that with the pulleys it is harder for your alternator to make power and that is prob. why it squeaks. Also i am running a sound system which takes a bit of power. I personally dont like the pulleys.

dracko712 · 02-28-2003

No problem/noise with March U/d's here. Make sure your belt is on the groove and not slightly off.