C63 AMG (W204) 2008 - 2015

C63 Weird Noise!

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Old 12-26-2018, 05:46 AM
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C63 W204 Coupe
C63 Weird Noise!

Hi All,

First post here - hope you are all having a fantastic break.

My car has been having this small whining noise for a while now, then on the weekend it started this rattling noise and a loud whine when driving. Been told by a local mechanic its a water pump failure and immediately told me to not drive the car till its repaired. (Video link below)


No garages around me are open at the moment (Birmingham, UK) so i thought i would try my luck here first before going anywhere. Fortunately, i am in the position where i have access to other vehicles.

I was wonder what other peoples take on this is? How expensive is it to repair? What could have caused this?
Old 12-26-2018, 07:47 AM
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Could be water pump. Too hard to tell from a video but it's for sure a bearing somewhere. Best way to find out is to pull the belt and check everything.

I would NOT run it any longer though. Failure could cause quite a bit more damage.
Old 12-26-2018, 07:56 AM
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Originally Posted by Jasonoff
I would NOT run it any longer though. Failure could cause quite a bit more damage.
Yes. I'd take the advice of the local mechanic and Jasonoff unless you can pinpoint the problem yourself. He's right, it's hard to tell from the video though.

Old 12-29-2018, 11:49 PM
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Look at the pinkish color on the pulls!! looks like coolant.
Old 12-30-2018, 09:19 AM
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Originally Posted by p31c63amg
Look at the pinkish color on the pulls!! looks like coolant.
Are you talking about the rusty bolts that look a bit pink, don't see anything that looks like coolant.

If you are a DIY kinda guy, take off the belt and spin everything by hand, sounds like a bad bearing to me, most likely would be a tensioner pulley as they go regularly, next most likely probably the water pump or alternator bearings making a noise.

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