Alternator belt keeps snapping

2000 VAUXHALL VECTRA
4 CYL • FWD
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AZZOL
  • MEMBER
  • 3 POSTS
alternator belt keeps snapping on vauxhall vectra,
Feb 13, 2011 at 3:37 PM
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SQM
  • ASE Certified Mechanic
  • 6,383 POSTS
  • ASE Certified Mechanic
Hello,

This could be due to a seized pulley or a stuck tensioner. If the tensioner exerts too much force on the belt it can snap.
A good first step would be to inspect all the pulleys as well as the tensioner. The idler pulley should spin freely as well as the tensioner pulley.
Make sure that the tensioner actually moves back and forth with appropriate amount of pressure.

Here is a helpful guide:

https://www.2carpros.com/articles/how-a-serpentine-belt-tensioner-works

Please let me know of any questions.
Thank you.
Nov 24, 2021 at 8:07 AM
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