I have a 1987 buick regal that is blowing alternator belts any ideas on why since the garage has no clue.


Asked by Dec 26, 2013 at 08:08 PM about the 1987 Buick Regal 2-Door Coupe

Question type: Maintenance & Repair

4 Answers

okay we have a flat belt...the tensioner pulley wears out...starts chafing the side of the belt and the alternator fails...along with all the other components...get a new component belt tensioner~....with idler~ http://www.amazingsavingsautoparts.com/index.php? action=item&id=7587031&adv=froogle

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Mike Tutty

It is either that or the alternator is not mounting quite true to the belt, and the pulley is rubbing on the belt.

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thought of that too, Mike....remember a twin timing belt Subaru came into the shop and the bolts were loose...supporting the component assembly~ needed heli-coils in that....I gave that job to a different shop~ y'know bolts do come loose with vibration if there isn't any threadlock on that~


Check the pulley on the alternator. Especially if you just replaced it with a rebuilt aftermarket unit. A friend once had a Thunderbird that started doing the same thing after he replaced the alternator. Turned out he needed a spacer behind the alternator pulley. HTH. -Jim

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