# Belt Tensioner Bounce at Idle Normal?

**URL:** <https://community.cartalk.com/t/belt-tensioner-bounce-at-idle-normal/90717>\
**Category:** Maintenance/Repairs\
**Created:** [July 26, 2015, 3:32am UTC](https://community.cartalk.com/t/belt-tensioner-bounce-at-idle-normal/90717 "2015-07-26T03:32:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Woogies](https://avatars.discourse-cdn.com/v4/letter/w/b5ac83/32.png) [@Woogies](https://community.cartalk.com/u/Woogies)\
**Post date:** [July 26, 2015, 3:32am UTC](https://community.cartalk.com/t/belt-tensioner-bounce-at-idle-normal/90717/1 "2015-07-26T03:32:31Z")

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I’ve replaced the serpentine belt on a 06 Pontiac G6 (6cyl) and I noticed at idle the tensioner has a slight bounce to it… Is that normal? It goes away when you hit the gas. Apparently the tensioner was replaced less than a year ago

I attached a short video. [HTTPS://vid.me/a7Ft](HTTPS://vid.me/a7Ft)

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**Author:** ![MY\_2\_CENTS](https://avatars.discourse-cdn.com/v4/letter/m/22d042/32.png) [@MY\_2\_CENTS](https://community.cartalk.com/u/MY_2_CENTS)\
**Post date:** [July 26, 2015, 3:44am UTC](https://community.cartalk.com/t/belt-tensioner-bounce-at-idle-normal/90717/2 "2015-07-26T03:44:27Z")

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Yup, that’s normal.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [July 26, 2015, 4:52am UTC](https://community.cartalk.com/t/belt-tensioner-bounce-at-idle-normal/90717/3 "2015-07-26T04:52:48Z")

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It sounds like it is doing its job. All that bouncing they do is why they wear out and have to be replaced once in a while.