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Alternator belt squeal


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Posted

i just got my car back and at the shop when i started it didnt make any sound. when i got to where i needed to go i stayed for an hour and left then i started my car up and it made a loud squeal noise for like 2 seconds. i drove it around for like 5 mins so it could warm up and re started the car and it didnt do it. just went outside to test it and it did it again. is it possible that the cold weather had something to do with it (35 degrees) or is the belt just loose?

Posted
i just got my car back and at the shop when i started it didnt make any sound. when i got to where i needed to go i stayed for an hour and left then i started my car up and it made a loud squeal noise for like 2 seconds. i drove it around for like 5 mins so it could warm up and re started the car and it didnt do it. just went outside to test it and it did it again. is it possible that the cold weather had something to do with it (35 degrees) or is the belt just loose?

wiggle the belt up and down, if it moves more than about a half inch or .75 or so then you gotta tighten it a little. plus if its a new belt its gonna stretch out a little then you have to retighten it. same thing happened with my car after i replaced the alt belt

Posted

if it is a HO alt you might just be out of luck, I never could get my Focus to stop doing that even after new belt tensioner and two new belts (yes they were the right size) If the pulley is too small you don't get enough belt wrap and when the car sits for a while your alternator has to top off the battery so there is a load on the alt right when you start the car. I'm sure some of the Alternator manufacturers will chime in with a fix for you but I just put a stock alt back on and pulled out the system since it is my extra car and I don't really need one in there anyway.

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Guest DC Power Kyle
Posted

It CAN glaze the alternator pulley which makes it harder to grab the belt. I would just tighten the belt a little bit more and see if that helps.

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