2004 545i belt squeal
#1
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hi everyone,
I have had an issue with my 5 series lately where when i slow down ( belt is slowing down ) i hear a squeal noise that is fairly loud and almost sounds like i am spinning tires around a turn. I replaced the serpentine belt AND the tensioner and the noise is still there !
there is about a quarter inch of play on my serpentine belt, and i was thinking it might need to be tightened more.. but at the same time it took a lot of pressure on the tensioner before i got it to the point that it is at, so i dont want to put much more pressure for fear of breaking something.
Any ideas or help would be great
I have had an issue with my 5 series lately where when i slow down ( belt is slowing down ) i hear a squeal noise that is fairly loud and almost sounds like i am spinning tires around a turn. I replaced the serpentine belt AND the tensioner and the noise is still there !
there is about a quarter inch of play on my serpentine belt, and i was thinking it might need to be tightened more.. but at the same time it took a lot of pressure on the tensioner before i got it to the point that it is at, so i dont want to put much more pressure for fear of breaking something.
Any ideas or help would be great
#2
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hi everyone,
I have had an issue with my 5 series lately where when i slow down ( belt is slowing down ) i hear a squeal noise that is fairly loud and almost sounds like i am spinning tires around a turn. I replaced the serpentine belt AND the tensioner and the noise is still there !
there is about a quarter inch of play on my serpentine belt, and i was thinking it might need to be tightened more.. but at the same time it took a lot of pressure on the tensioner before i got it to the point that it is at, so i dont want to put much more pressure for fear of breaking something.
Any ideas or help would be great
I have had an issue with my 5 series lately where when i slow down ( belt is slowing down ) i hear a squeal noise that is fairly loud and almost sounds like i am spinning tires around a turn. I replaced the serpentine belt AND the tensioner and the noise is still there !
there is about a quarter inch of play on my serpentine belt, and i was thinking it might need to be tightened more.. but at the same time it took a lot of pressure on the tensioner before i got it to the point that it is at, so i dont want to put much more pressure for fear of breaking something.
Any ideas or help would be great
The first time I changed belts I just degreased/washed the engine and had a squealing for like 500 miles so I changed belts. So that's my story about belts.
#3
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Could it be pulley bearings? I get a similar sound at a cold start and I'm guessing that's where the sound is coming from.
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Thanks for the input guys, I'm gonna take the belt off tomorrow and take a closer look to see if i can pin point the issue.
When i first noticed the noise i thought it was just the belt. when my dad and i were trying to put the new belt on, we realized one of the tabs on the tensioner was broken off and there was also a missing rod.
![](http://i16.photobucket.com/albums/b45/aggkipp5/tension1.jpg)
![](http://i16.photobucket.com/albums/b45/aggkipp5/tension2.jpg)
pics comparing the new tensioner to old. we figured that since it was so busted up that HAD to be the issue. i'll have to take a listen tomorrow to see if it might be a specific pulley that is making the noise.
When i first noticed the noise i thought it was just the belt. when my dad and i were trying to put the new belt on, we realized one of the tabs on the tensioner was broken off and there was also a missing rod.
![](http://i16.photobucket.com/albums/b45/aggkipp5/tension1.jpg)
![](http://i16.photobucket.com/albums/b45/aggkipp5/tension2.jpg)
pics comparing the new tensioner to old. we figured that since it was so busted up that HAD to be the issue. i'll have to take a listen tomorrow to see if it might be a specific pulley that is making the noise.
#5
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when is it making the noise?
Is it possible that it is the ac belt?
Will it make the noise with the main drive belt off?
And yes please check belts after it has been running a couple minutes. If the belt is off a little bit on on pulley it will most likely jump a rib or two off within the first 5 minutes.
Is it possible that it is the ac belt?
Will it make the noise with the main drive belt off?
And yes please check belts after it has been running a couple minutes. If the belt is off a little bit on on pulley it will most likely jump a rib or two off within the first 5 minutes.
#6
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when is it making the noise?
Is it possible that it is the ac belt?
Will it make the noise with the main drive belt off?
And yes please check belts after it has been running a couple minutes. If the belt is off a little bit on on pulley it will most likely jump a rib or two off within the first 5 minutes.
Is it possible that it is the ac belt?
Will it make the noise with the main drive belt off?
And yes please check belts after it has been running a couple minutes. If the belt is off a little bit on on pulley it will most likely jump a rib or two off within the first 5 minutes.
other wise i might just have to bite the bullet and have a local shop check it out. im sure with a lift and the proper tools it should be a fairly easy fix
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#8
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i may sound stupid when i ask this, but what do you mean by clocked?