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      04-07-2016, 01:50 PM   #1
Sleeper519's Avatar

Drives: 08 E92 M3 DCT
Join Date: Nov 2009
Location: Atlanta, GA

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Help, throttle whistles like a tea kettle

When I press the the gas pedal down for the initial few millimeters (usually from a start), the noise from the engine bay is a whine or whistle like a damn tea kettle on boil. It is not RPM or speed sensitive, it just starts every time I press my foot down after a lift and it goes away after I depress the throttle to an inch or more. I feel no change in performance but it is driving me CRAZY.

I'm thinking it could be a pulley or belt that has some inertial startup whine. The last engine work I had done was rod bearings replaced last year, not sure if pulleys were messed with. Is there any vacuum hoses that could be loose?

Would love to solve the mystery without resorting to expensive shop mechanic.
Any thoughts appreciated.

Thanks all.

2008 M3 Coupe / DCT // StopTech BBK 380/355 / Pagid RS29 / Motul / Apex Arc-8 / BFG R1S / Ground Control / MS filter / Performance spoiler / BPM tune // Road Atlanta 1:39.70 / VIR Full 2:10.87 / Barber 1:42.20
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      04-07-2016, 02:48 PM   #2
But doctor...I am Pagliacci.
dparm's Avatar

Drives: 2011.5 E90 M3
Join Date: Jun 2013
Location: Chicago, IL

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A vacuum leak could certainly whistle, but I'd expect other symptoms like stumbling or a CEL.
2011.5 AW M3 sedan ZCP
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