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Squealing noise with engine revs-- Opinions
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07-19-2012, 09:04 PM | #1 |
Colonel
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Squealing noise with engine revs-- Opinions
Hey guys,
I need your help on this irritating noise I've been getting the past few days. If listen carefully you can hear a squealing noise that tracks engine revs. Any ideas on what that could be? I can also hear a weird plastic rattling noise on idle (not the injecors), but that would be hard to capture on my phone... Feedback is appreciated
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'07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar.
'05 C55 AMG SOLD - '22 Tesla M3P | '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD | '07 E90 335i, PTF COBB E50, FBO, HFS4 |
07-19-2012, 10:03 PM | #5 |
Sigma Alpha Epsilon
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Its not wastegate rattle... it even says in the name rattle and what he is talking about is a squeal. Have you had any work done in the engine compartment lately? My thought would be loose serpentine belt. IF it is that, then tighten the components and/or buy some serpentine belt spray. The spray makes the belt have better friction with the parts.
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07-19-2012, 10:10 PM | #6 | |
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It's metal rattling. Could be a heat shield but probably a wastegate. Maybe a vacuum canister is going. Point is there are a hundred real things it could be (not a belt tho LoL) Bring it to a person in real life. The internet is not the place to diagnose noises recorded on cell phones. |
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07-19-2012, 10:16 PM | #9 | |
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It's a design flaw. Youll need to have the wastegate flap modified or new aftermarket turbos. |
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07-19-2012, 10:26 PM | #10 | |
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07-19-2012, 10:43 PM | #11 | ||
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07-20-2012, 12:29 AM | #13 |
Colonel
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Thanks for the replies guys...
I do have wastegate rattle but that is not the noise I'm talking about. Focus on high frequency noise and you'll hear the squealing. It directly follows engine RPMs. The internet is definitely not the right place to diagnose, but I always like to keep other people's experiences in mind when I visit a mechanic shop. My water pump was changed recently (a week ago), may be that has something to do with it. The fact that it tracks the RPM leads me to think it has to do with the belt.
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'07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar.
'05 C55 AMG SOLD - '22 Tesla M3P | '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD | '07 E90 335i, PTF COBB E50, FBO, HFS4 |
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07-20-2012, 12:31 AM | #14 |
Colonel
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Rader buddy, that's one tool I never knew existed for cars hehe definitely a must for our cars
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'07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar.
'05 C55 AMG SOLD - '22 Tesla M3P | '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD | '07 E90 335i, PTF COBB E50, FBO, HFS4 |
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09-28-2012, 09:46 PM | #15 |
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Any luck? Did you tighten belts? Spray silicone lube on it? I have same problem now, gonna try the belt tighten and silicone spray, check my pulleys and top off my power steering reservoir.
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