Question about squeaky pulley
Thread Starter
Racer
Joined: Mar 2006
Posts: 381
Likes: 3
Question about squeaky pulley
One of the belt pulleys is squeaking really bad, sounds like the bearings are shot on something. When I have the hood open and the engine running it's not apparent which one is the culprit.
Before I really tear into things, is there a particular part, that is the most common to go out first ?
Before I really tear into things, is there a particular part, that is the most common to go out first ?
Race Director
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
One of the belt pulleys is squeaking really bad, sounds like the bearings are shot on something. When I have the hood open and the engine running it's not apparent which one is the culprit.
Before I really tear into things, is there a particular part, that is the most common to go out first ?
Before I really tear into things, is there a particular part, that is the most common to go out first ?
Main belt tensioner, serpentine idler pulley, A/C tensioner. Also, Dayco Poly Cog belts are recommended replacement.
Racer
Joined: Jun 2008
Posts: 372
Likes: 7
From: Fort Oglethorpe GA
I have the same problem, replaced harmonic balancer with a 25% underdrive and the serpentine belt tensioner. I used GY gatorback belts and it squeels like a school girl until it runs a while. Looking for the culprit now.
Racer
Joined: May 2004
Posts: 388
Likes: 1
From: Louisville Ky
Mine was the water pump! The coating wore off and no matter what belt I used it was cricket season under my hood. Put a new water pump on and poof, silence of the crickets. If something in the system not in alignment, then the belt will "slip" back into line when it rides over the water-pumps' smooth pulley. Mine developed the problem when my Harmonic balancer retaining bolt backed out and the balancer started "walking" off the crankshaft. After enough time, the coating on the water pump (from what I've been told, it's not paint or powder-coating, but something like Teflon) wore off and the belt started squealing on the bare aluminum. I tried stripping all the coating off and it got worse, way worse. Good luck, I've heard of all sorts of reasons for noisy belts, But the main culprit is pulley alignment.
