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Old 03-17-2010, 10:07 PM   #13
Registered User
Join Date: Nov 2006
Location: Edmonton, Canada
Posts: 2,230
My Ride: 2003 325xi
Originally Posted by Elkhound View Post
Funny, I have an 03' 330xi too, and I was recently told that a problem could be starting with my secondary air pump, but if so, it won't be getting worse now in the warmer weather. Said I'll have to wait until next fall/winter to see if it starts up again. Symptom was shifter/wheel/engine shaking from side to side as if an engine or transmission mount was loose.. But it goes away pretty fast after the car starts moving and the engine begins to warm up..
All that vibration could be your secondary air pump. The secondary air pump automatically shuts of in about 2 minutes. The Seafoam treatment could eliminate some of the back pressure.
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