Happened 3 times over 9 mos. on rainy or very damp day. Replaced belt once and tensioner after first incident. Sequel: All suggestions are appreciated, but had been tried before posting. My mechanic's researched this solution which isn't cheap, but it works. Change to a double sided serpentine belt and change the idler pull to a grooved type. Details will be provided if really needed.
Make sure the plastic shield is not missing below the pulleys which keeps road debris and excess water off belt and pulleys. Also check that the alternator or power steering pump are not slightly out of alignment.
SOURCE: squealing NOISE possibly from fan belt
Belts stretch from new. Try to tighten them again. Hopefully the are not glazed or this may stay with you.
SOURCE: Serpentine belt problem
I had the same problem and went through a number of serpentine belts, one possible solution is the tensioner, but another to look at is the power steering pump pulley, mine has shifte just enough to cause the belt to move, it is a bugger to shim, I cut a flat washer in half and stuck it in place between the pump and the bracket, gl...
SOURCE: serpentine belt keeps popping off
check #1 engine main pulley is all the way in and tight
#2 belt align? ok , no , check carefully the serpintin is centered in all pulleys, and do not miss the water pump pulley, runs on the inside the bold and outer surface of belt (serpertine), there is a drawing at the engine bay
SOURCE: Serpentine belt slipped off. I need a diagram
How's this.
Testimonial: "Awesome. Thats the one I thought it was, can't get it to move though on account I can't get a wrench on it. theres no room to get my hands in there!"
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