02-11-2013, 07:14 PM
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just like that, he's gone
Location: Northern California
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Join Date: Oct 2003
Posts: 1,089
Mein Auto: 330i and 535i
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Ok, I had a similar issue with my E46 that drove me crazy for months before resolved it. It sounded like a a very faint whiny dental drill and I really thought it was electronic interference or something for sure. It didn't change with revs or anything just that high pitched noise. I finally tracked it down to a leaky air intake elbow. I highly doubt it's cracked from age already on an F10 like it would on a well flogged E46 but perhaps it's loose enough to make the noise but not enough to kick off an error code with the MAF sensor. Just something to consider.
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2013 F10 535i M-Sport (Picked up 9/14 from Santa Barbara!) (Sophisto Grau, 6-speed MT, M5 Grille/Trunk Lip, more to come)
2002 E46 330i Sport (Jet Black, 5-speed MT, H&R/Koni Sports, Meyle HD Control Arms, Powerflex FCAB's, Hotchkis sways...and more)
2001 E46 330Ci (Sold) : (
 
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