well i have a 2000 s10 blazer my belt is make noise and i dont know what to do the belt is new and it only makes the noise when i hit the gas. i think i may be one of my pulleys but don't know any help would be nice thank u

 

*Moved to 2nd Gen Tech*

What was the brand of belt that you installed? I have used Goodyear Gatorback belts with great success on the s-series vehicles. I have had many other brands of belts do the same thing as you describe even when new.

 

am not to sure but i know its don't good yr so u dont think its the pulley

 

get a dinner candle and dress the belt on each side, DONT DO IT BY PULLIES, if you slip your new belt may bite it, find at least 4 inches of belt and press the candle down on one side, then the ribbed side. cheap and it works.
http://www.youtube.com/watch?v=I0-ltd8vS8Q

 

hey thanks man it work so far

 

Although you can try the candle trick, swartlkk is right. I had a squeak in my '00 Jimmy. I thought it was the idler pulley. Still had the squeak. Got a Goodyear Gatorback belt and that solved it!

 

ok cool i am just get a good yr if it does it again do u know around what it cost

 

It's the tensioner you need to replace.... if it's bouncing around a lot at idle then it's bad. they are like $25.

I usually get 2 tensioners per belt life.

You should never have to add "conditioners" or an other home remedy to quite a belt.

 

While I've never had a tensioner go bad,I must agree with dg98adams:NEVER "condition" a belt,one is only chasing the symptom,not the problem!
A belt needs to be DRY DRY DRY to function effectively!