i have a loud whinning sound commin from the engine on my 93 chevy suburban

[Eslingerj]

i dont know why it is whinning it is commin from one of the pulleys and i cant figure out witch one.... my belt is starting to wear down on one side and it squels really bad... do you have any idea what this is...
i was told the tensioner or alt.

Josh

[Z71_guy]

could be any of the pulleys take the belt off and spin them by hand feel for resistance, rough, or loose and replace as necessary, for the tensioners test the tensioner spring by trying to move it, if there is a lot of slop replace it or if it isn't operating smoothly

[2ToNe04]

start buy replacing the belt first.

if it isnt that..... look into the other stuff first.

[spottweld]

ATTN this can be dangerous. take a long screwdriver phillip of flat and put it on the bolt that holds the tensioner pulley on if you hear a grinding noise that is the culprit if it sounds smooth and very little noise move to your idler then the altenator. DO NOT replace the belt for you have not fixed the problem yet and will be doing it again. Also you can try just taking the belt off and wiggling the pulleys and tensioner to feel for play. YOU MUST FIRST DIAGNOSE THE PROBLEM OR YOU WILL BE DOING THIS AGAIN

[2COR517]

could be any of the pulleys take the belt off and spin them by hand feel for resistance, rough, or loose and replace as necessary, for the tensioners test the tensioner spring by trying to move it, if there is a lot of slop replace it or if it isn't operating smoothly

This is what I would do.

[Eslingerj]

thanks guys im gonna do that stuff tomorrow and i will let you know how it goes....

_____________________
93 Chevy suburban k1500 4x4 (Duel exhaust and K&N air filter)

[88Jimmy4X4]

I can almost guarantee its the belt. I had the same problem on my Dakota R/T.

[Crakums_GT]

Maybe someone through a supercharger in there while you weren't looking? Lol ok jokes aside I agree that it sounds like a belt.

-Greg

[fx2offroad]

It could be the alternator. I have an 08 silverado and I've had it in 4 times for a bad squeal in the engine compartment and i'm about to take it in for the 5th time. It happeneds when the engine is cold and the air tempature is below 65. Also when it is really humid. They are going to have to do something or i'm getting a new truck from them.

[Eslingerj]

thanks guys my belt was all streatched replaced that and than did the screw driver trick and the rear bearings in my alt. are goin out that where the whine is commin from just gotta replace that now.. thanks for the info