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      06-04-2014, 12:10 PM   #1
Mike.
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Help! what noise is this

Okay so it started last night.
My car: 2010 328xi 37xxx miles

17 seconds I put it into drive the noise happens
31 it stops when I start inching forward
then starts again at 47 seconds

the sound stops at highway speeds, just when I start the car

I did just get my secondary cats out... exhaust rattle? Seems like it happens sometimes when I put the car into gear...sometimes when braking at very low speeds... no codes are thrown

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      06-04-2014, 04:05 PM   #2
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anyone? any ideas?
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      06-04-2014, 04:12 PM   #3
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kinda hard to tell, but i think its gotta be exhaust related, maybe loose brack.

driveshaft dont rotate when u in P, so maybe its touching something.
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      06-04-2014, 04:21 PM   #4
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Quote:
Originally Posted by jc5988 View Post
kinda hard to tell, but i think its gotta be exhaust related, maybe loose brack.

driveshaft dont rotate when u in P, so maybe its touching something.
its so weird...whenever I put the car from park to drive or park to reverse from a cold start, it happens...it rattles like crazy for like 5-10 seconds, then i drive a little and it stops, until next time I stop the car, turn it off...let it sit for a bit then turn it on.
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      06-04-2014, 07:20 PM   #5
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I would have the exhaust brackets checked. When going to Drive or Reverse the engine is under some load, so it changes the engine idle speed probably to the point that this vibration is taking place.
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      06-04-2014, 07:22 PM   #6
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Its rubbing something from underneath.
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      06-04-2014, 07:30 PM   #7
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thanks guys... makes me feel so much better. I searched for it and it was like going to web md to look up what had the symptoms of a cough haha

I suspected it was an easy fix since it was right after I got my cats out..something prob just came loose
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      06-05-2014, 09:24 AM   #8
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Hope this is what we suspect, and should be an easy fix!
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