| To e-mail, change noise into sound.
Um, I'm no expert on foreign vehicles, but if it's injected, there is
probably an Idle Air Control valve just like or similar to injected
vehicles made by G.M.
If the IAC is toast (and stuck in one position), it would cause the
same exact symptom as a vacuum leak.
Spraying WD-40 around any potential areas that could be leaking should
help discover if you have a vacuum leak. Using carb cleaner would be
OK around metal, but would further dry out rubber hoses.
Also, on a vehicle that is 10 years old, checking the vacuum hoses
would be a good idea and would be a very likely source of a vacuum
leak. Spraying WD-40 or on the hoses would yield the same discovery
if there is a leak.
1. Check vacuum hoses - use WD-40 to help diagnose
2. Check for vacuum leaks around gaskets - again use WD-40
3. Check and replace (if necessary) the IAC valve ( or step motor) -
whatever it's called on BMW's
Good luck. Give us a report on what you found when the vehicle is
Independent AMSOIL Dealer
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