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BMW 3-Series (E90 E92) Forum
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Serpentine belt / pulley squeak when accelerating
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05-01-2022, 07:36 PM | #1 |
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So half of the inside (closer to the motor) serpentine belt got ate up when I took it off and inspected pulleys the power steering one was missing half of the backside as well and changed it to a aluminum pulley got a new belt (also installed dp while I waited for parts) first day I put it on the ground it sounds fine for a while and then I started hearing a squeak whenever I accelerated even in neutral I took the belt off cleaned the groves of the pulleys and air pressured all around pulleys got a new tensioner and cleaned alternator (which is where sound is mostly coming from) and still nothing i tried turning the car on without serpentine belt on and it didn't make the noise really could use the help I hate when my car makes noise
Also from the beginning if I sprayed the inside of the tensioner pulley with wd40 the noise would go away https://youtube.com/shorts/S9a-Fdk9lNE?feature=share |
05-01-2022, 08:32 PM | #3 |
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05-02-2022, 08:54 AM | #4 |
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What brand belt did you use? There’s some manufacturers that are too long and they squeak. Specifically a belt that advanced auto Has.
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Mustafa.e92214.00 |
05-02-2022, 08:56 AM | #5 |
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I changed the belt to a continental and it seemed to go away but rn on my way to work I started hearing it again when pushing on the car more
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05-02-2022, 10:21 AM | #6 |
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Belts can be inconsistent in length but 90% of time it's another aspect of the install causing the squeak. I'd double check the tensioner pulley because most likely that's the issue.
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05-02-2022, 11:12 AM | #7 |
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The noise went away right as I was down the street from my work place again so if it continues when I leave today I'll take a look at the tensioner pulley maybe I just installed wrong or something
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Jaronbwall295.50 |
05-02-2022, 08:50 PM | #8 |
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Well it wasnt making the noise after work so after I got home decided it needed a well deserved shower and…. The serpentine belt is now wrapped around my alternator
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