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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum! |
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#1
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Loud Noise
After cold weather i have a loud noise in right/front side when i drive in the morning for 5 minutes and then it goes away and if i park i for long time it would start again. It doesn't happand when car is in stop, it happend when car start to move.
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#2
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Could be the secondary air pump, located in line with the windshield washer tank on that side.
It is only doing something for a short while after a cold start (pre-warming the cat), and can get noisy when it has some internal degradation. Usually more of a bang just after starting, but your symptoms could fit as well. |
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