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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Odd engine noises



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      01-17-2007, 10:42 AM   #1
leftcoastman
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Odd engine noises

Hi all,

I have this odd, repeating noise emanating from my 335i engine. I can only hear it during idle and it repeats every 3-4 seconds. The best way I can describe it is like a very very very faint alarm clock going off. I can't hear it while cruising and it is there whether or not the engine is cold.

Is this a normal turbo sound or should I check my baby in to the dealer?
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      01-17-2007, 12:49 PM   #2
mayanh8
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Quote:
Originally Posted by leftcoastman
Hi all,

I have this odd, repeating noise emanating from my 335i engine. I can only hear it during idle and it repeats every 3-4 seconds. The best way I can describe it is like a very very very faint alarm clock going off. I can't hear it while cruising and it is there whether or not the engine is cold.

Is this a normal turbo sound or should I check my baby in to the dealer?
Doesn't seem like a normal noise to me. Take it to the dealer to be safe.
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      01-17-2007, 01:22 PM   #3
AHY
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I hear the same thing, its def. not a turbo sound. I have a feeling that its normal, but to be on the safe side go have it checked out.
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