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E36/7 Z3 (1996-2002) and E85 Z4 (2003-2008)
Coupe and Roadster talk with our gurus here... |
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#1
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High Pitched Noise...
Hi, I recently had a minor accident denting the front grill of my Z4. Since it has been repaired & everytime the weather heats up im hearing a high pitched continuous sound, but as soon as i hit the break it stops, but starts again after releasing the break. Does anyone have any idea what it could be?
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#2
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It sounds like a small vacuum leak. When you hit the brakes the vacuum drops momentarily.
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#3
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Check your intake tube. This is a common problem with the Z4.
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