squeeking belt
Thread Starter
On The Tree
Joined: Apr 2010
Posts: 111
Likes: 0
squeeking belt so i got my 2000 ws6 a little while ago and its been running great.. ive put 1500 miles on it since ive owned it and this week i started hearing a squeeking noise coming from the engine bay.. to troubleshoot i put the car in neutral and revved it and the squeeking got worse with the higher rpms.. and i figured out it was the belt. at idle it barely squeaks but the moment i give it any gas it begins to squeak loudly.. the car has underdrive pulleys and an aftermarket belt that came with the car. i have not had any problems like this since i got the car.. the noise sounds like it could be coming from the tensioner but im not sure.. what would cause the belt to squeak and what is a possible solution. is there a possibility that a change in temperature would cause the belt to shrink/expand enough to make it squeak? any help would be appreciated. thanks
take a look at the tensioner when the engine is running...if it is bad, sometimes it will rattle and bounce around a lot. This is what happened to my AC belt tensioner. They should be relatively stable....
TECH Fanatic
iTrader: (2)
Joined: Feb 2004
Posts: 1,112
Likes: 1
From: rosemount,mn/windsor locks,ct
spray the belt with silicone spray if the noise goes away=bad belt if not troubleshoot further down the line,tensioner/pulley. it could also be your a/c compressor clutch.
TECH Addict
Joined: Jun 2009
Posts: 2,012
Likes: 0
From: Tulsa, OK
The tensioner is supposed to move. If it doesn't, then the whole assembly is bad. You're concerned with the bearing in the guide roller on the tensioner, which is why I said to check it with a stethoscope.
Trending Topics
Thread Starter
On The Tree
Joined: Apr 2010
Posts: 111
Likes: 0
silicon spray ftw! im guessing the recent change in temperature caused the belt to expand or shrink.. 4.26 from autozone for some liquid wrench and the job was done.. 30 mins of driving and 30 seconds of work to fix a small annoying problem. thanks for the help guys and im glad it was something minor
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo You are correct, supposed to move a little, but I have seen tensioners bounce like they were riding a wild bull! They should hold the belt down pretty well if they are working properly.
Sadly I had this problem about a month ago. I always heard squealing. No matter how much belt dressing I sprayed, it always came back... Replaced my tensioner.. better, but still squealing. Noticed my belt wasn't in the best shape (actually noticed the metal showing on the inside of the ribs), replaced the belt. WAY better, but still a TINY squeal... Replaced my AC lower belt.. Now it's silent as can be. All you hear is the cam 
I feel dumb for not replacing the belts first, but hey I've got a new tensioner and it looks good in the engine bay.
I feel dumb for not replacing the belts first, but hey I've got a new tensioner and it looks good in the engine bay.
