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E46 General discussion and technical help for 1999-2004 3 series cars.

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Old 07-07-2005, 11:51 AM   #1
EnvyM3
 
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Name: EnvyM3
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Join Date: Apr 2005
Location: Manchester, NH
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Your Ride: 2001 330ci
Loud bang, what was it?

I was sitting at a stop light yesterday and when the light turned green, I started to go and i heard a loud bang. It was so loud that I though I got rear ended. It wasn't a sound like the engine backfiring but it sounded like it came from under me as if something slipped when the power went to the rear wheels. Anyone have any idea what it might have been. I have a 2000 323 ci / manual tranny if that helps.

Thanks in advance for any input.
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Old 07-07-2005, 12:43 PM   #2
zeaq328i
 
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Air mass censor?I have this experienced this misfiring with my dad's mercedes, "bang bang".It was the air mass censor at fault.Dunno about ur car tho....
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Old 07-07-2005, 01:04 PM   #3
EnvyM3
 
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I'm thinking it might be the throttle body b/c it happened to my buddies 7 series but his is an auto and it only happened to him around 85mph.....so I'm still puzzled.
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