I Need Help!!! Car Making Noise

NewToBeamer · 02-19-2015, 12:57 PM

So early this winter my car serpentine belt started to squeak very loudly on my 07 335i. I just reached 80k so what the heck I decided to change the belt, idler tensioners and other pulleys and indeed the sound went away....for 3 weeks. I do have a oil filter and cooler housing leak so Im guessing thats causing the belt to squeak. I read online that you can clean the belt and pulleys with carburetor cleaner to dry up the oil and debris so I tried that today but it seemed to make my situation worse!!

I heard someone mention that a water pump bearing can cause this...thats my next step I guess. Can anyone shed some light on this please

Sample · 02-21-2015, 02:40 PM

I had a noise that would instantly go away after pouring a little water on the belt while the car was running. Took the two pulleys, tensioner, and belt off and cleaned everything up with a wet paper towel then dry. Sound is now gone.

Chrisruf911 · 02-21-2015, 06:33 PM

Your water pump is not driven off the belt so it will not cause a belt noise.

NewToBeamer · 02-22-2015, 07:08 PM

Quote:

Originally Posted by Sample

I had a noise that would instantly go away after pouring a little water on the belt while the car was running. Took the two pulleys, tensioner, and belt off and cleaned everything up with a wet paper towel then dry. Sound is now gone.

Im think this is what has to be done because I took the easy route cleaning and just sprayed each idler and the belt while it was still on and wiped the belt when I turned on the car.

Sample · 02-22-2015, 09:07 PM

If cleaning doesn't work, replace it. I tried the Dayco kit from RockAuto and it made a different type of noise :/ Luckily a cleaning of my old parts fixed my noise issue. I'll prob go genuine if I have to replace these parts in the future.

e92_boost · 02-23-2015, 03:18 PM

What kind of noise was it, cause I think my serpentine belt is making noises too

NewToBeamer · 02-23-2015, 07:52 PM

Quote:

Originally Posted by e92_boost

What kind of noise was it, cause I think my serpentine belt is making noises too

its your average repetitive serpentine belt squeak. I came to the conclusion that my belt is just dirty from the oil leak.

02-19-2015, 12:57 PM	#1
NewToBeamer Storm Trooper 7 Rep 137 Posts Drives: E92 335i 6MT Join Date: May 2014 Location: NYC iTrader: (0)	I Need Help!!! Car Making Noise So early this winter my car serpentine belt started to squeak very loudly on my 07 335i. I just reached 80k so what the heck I decided to change the belt, idler tensioners and other pulleys and indeed the sound went away....for 3 weeks. I do have a oil filter and cooler housing leak so Im guessing thats causing the belt to squeak. I read online that you can clean the belt and pulleys with carburetor cleaner to dry up the oil and debris so I tried that today but it seemed to make my situation worse!! I heard someone mention that a water pump bearing can cause this...thats my next step I guess. Can anyone shed some light on this please
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02-21-2015, 02:40 PM	#2
Sample Second Lieutenant 67 Rep 236 Posts Drives: E90 335i/G05 X5 xDrive40i Join Date: Apr 2011 Location: US iTrader: (8)	I had a noise that would instantly go away after pouring a little water on the belt while the car was running. Took the two pulleys, tensioner, and belt off and cleaned everything up with a wet paper towel then dry. Sound is now gone.
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02-21-2015, 06:33 PM	#3
Chrisruf911 Second Lieutenant 39 Rep 227 Posts Drives: 2007 335i...not stock Join Date: Mar 2012 Location: Mt. Washington, Ky iTrader: (0)	Your water pump is not driven off the belt so it will not cause a belt noise.
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02-22-2015, 09:07 PM	#5
Sample Second Lieutenant 67 Rep 236 Posts Drives: E90 335i/G05 X5 xDrive40i Join Date: Apr 2011 Location: US iTrader: (8)	If cleaning doesn't work, replace it. I tried the Dayco kit from RockAuto and it made a different type of noise :/ Luckily a cleaning of my old parts fixed my noise issue. I'll prob go genuine if I have to replace these parts in the future.
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02-23-2015, 03:18 PM	#6
e92_boost Captain 228 Rep 703 Posts Drives: Smart Car Join Date: Nov 2014 Location: Kenosha Wi iTrader: (0)	What kind of noise was it, cause I think my serpentine belt is making noises too __________________ ESS G1 e90 - BBS E88
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