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Thread: accessory belt comes off
07-02-2007, 07:35 PM #1
- Join Date
- Jul 2007
accessory belt comes off
'94 suburban, 5.7L, 2WD.
Belt came off Thursday last week while wife driving. I went and put the belt back on, it was pretty tore up so I went straight to auto parts store and put on a new one before driving home.
Next day, new belt came off again while she was driving. I went and traded cars with her and drove the sub back to work and later home that evening.
Belt never came off with me driving, but I didn't run the A/C. So I started it in the garage put on the A/C and when I revved the engine (by hand at the TB) I could see the belt skirt across the idler pulley (located directly beneath the A/C compressor).
Got my wife to sit in the truck and turn the steering wheel with the A/C running and the belt skirted across the pulley.
Has the tensioner pulley just started to wear out and the load on the belt from the A/C and turning making it fail?
By the way, I replaced the idler pulley (directly under the A/C) but it didn't make a differnce.
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