Thread: RPM drops on idle
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      08-31-2016, 01:41 AM   #88
woody888
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Drives: E92 & F80 M3
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I have checked the vaccum booster that is fine.
It does not leak or has the warnning code.

If that might be booster.what the symbolic issue on the booster?

Quote:
Originally Posted by MFL View Post
Hint: Brake Booster.
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