Squeaking belt help
Thread Starter
Member
Joined: May 2016
Posts: 133
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From: Stanwood WA
2009 C350
Squeaking belt help
So i have a squeak coming from my belt. I think it might be the tensioner, but i'm not sure. Anyone have an idea on what squeaks first generally on the W204? I know this is a random question and could be any of the idlers, just hoping for more ideas. I used my stethiscope and was not able to determine which one was the culprit.
Thread Starter
Member
Joined: May 2016
Posts: 133
Likes: 8
From: Stanwood WA
2009 C350
With the stethoscope it was loudest at the tensioner, it just wasn't a high pitch sound like I was hearing. Of course the sound tends to go away when it warms up. No belt ware.
Junior Member
Joined: Mar 2014
Posts: 48
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From: in da garden of 350"s
08 C350
its not the tensioner its the idler pulley at the top of the motor a little the left. had this same problem... ecs tucnning has the kit with belt
Thread Starter
Member
Joined: May 2016
Posts: 133
Likes: 8
From: Stanwood WA
2009 C350
Junior Member
Joined: Mar 2014
Posts: 48
Likes: 2
From: in da garden of 350"s
08 C350
Member
Joined: Aug 2016
Posts: 130
Likes: 18
'11 E350 4Matic Sport
Would you recommend the full rebuild/replace of the idler and tensioner pulleys once the belt wears out? My original belt on my '09 is making a little bit of noise when cold @ 70k miles and I am sure it is nearing end of life due to dry rot. Just curious if I don't have pulley noise yet if I should just replace them when I do the belt.
Thanks in advance!
Junior Member
Joined: Mar 2014
Posts: 48
Likes: 2
From: in da garden of 350"s
08 C350
Would you recommend the full rebuild/replace of the idler and tensioner pulleys once the belt wears out? My original belt on my '09 is making a little bit of noise when cold @ 70k miles and I am sure it is nearing end of life due to dry rot. Just curious if I don't have pulley noise yet if I should just replace them when I do the belt.
Thanks in advance!
Thanks in advance!
Yes when u change your belt do it because it will go bad sooner or later ..IMO just to have a piece of mind..
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Thread Starter
Member
Joined: May 2016
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From: Stanwood WA
2009 C350
I picked up the belt kit. I was surprised to find I didn't have E-torx bits considering I have a Snap on box full of tools. Does anyone know the size you need for the tensioner bolts?
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From: Milwaukee, WI
2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
I just did my tensioner, I had noise from belt (literally just replaced it 10 minutes ago). Sound is gone and its smooth. $30 win. I believe the torx screws are E13. Check "pelicanparts c300 diy" and there should be a diy with all the info.
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Joined: May 2016
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From: Stanwood WA
2009 C350
