New serpentine belt too tight

New serpentine belt too tight

Postby Denny B [OP] » January 6th 2021, 5:17pm

I had a run in with a opossum and went for a slow drive down a bumpy road hoping that it would jump off. But it moved into the belt and knocked it off. I bought a new on to put on and it is the correct part number but it is too tight. I had the tensioner pulled as far as it would go and it wouldn´t slip over the pulley. Maybe it was hanging up on a lip it was getting dark but I think that it was on correctly. I put the old belt back on without problems. I checked them when off and the used one was a little longer I assumed from the years of stretching. Any ideas?
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Re: New serpentine belt too tight

Postby tungtide » January 6th 2021, 6:26pm

You want that tensioner working. Some place around the middle. Get a longer belt, keep the old one as a spare.
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Re: New serpentine belt too tight

Postby Denny B [OP] » January 6th 2021, 7:07pm

Thanks Ken, that's what I was thinking. I didn't know about the half travel but it makes sense. I've been looking and cross referencing and came up with one 7 millimeters longer but it's seems more common to Europe. I'm going back to the parts store to see if they came come up with something.
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Re: New serpentine belt too tight

Postby xit » January 6th 2021, 7:10pm

I ordered a belt for my 1994 and they sent one for W/O AC & it was too short, got one for AC & it fit correctly. Might check, they gave you the correct belt. :shrug: :shrug: :shrug:
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Re: New serpentine belt too tight

Postby Mmusicman » January 6th 2021, 9:49pm

Part number on new belt?
Maybe packaged wrong?
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Re: New serpentine belt too tight

Postby AstroWill » January 6th 2021, 9:55pm

Is your alternator original or upgraded?

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Re: New serpentine belt too tight

Postby Denny B [OP] » January 7th 2021, 10:09pm

I want to thank everyone for the ideas, the parts store had a belt about a half an inch longer than the first one and it went on nice. I've had this van for 20 years now and I'm pretty sure that I've put a belt on it before because I took off the idler pulleys to have the bearings replaced years ago. Who knows why the book indicated belt was too short, I measured it and it was correct. Thanks again, Denny.
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