car vibrates (rocks) on start and acceleration

2002 BUICK LESABRE
150,000 MILES • V6 • 2WD • AUTOMATIC
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LOAFERDUDE
  • MEMBER
  • 1 POST
car had a burning smell replaced serpentine and idler pulley started car while belt off didn't vibrate installed aid items car rocks bad.
Feb 6, 2015 at 2:28 PM
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
replace tensioner as well then check for a bad motor mount. it still may be something in accessory drive however.
Feb 7, 2015 at 6:57 AM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
It sounds like you have an engine accessory that is locked up, I would remove the belt and spin each pulley to make sure they turn freely.
Jul 18, 2024 at 6:22 PM