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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 06-13-2009, 11:08 PM   #1 (permalink)
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Check Engine Light Help??

Greetings everyone,

I am kinda new at this forum thing and i just picked up my first bmw saturday night. I am only 16 but i am well educated in the automotive field...dad's a mechanic. Any way i bought a 95' 325i (yes i know my username is misleading) and the CEL is on. The previous owners were complete morons and the car just needs sum TLC!! Today i brought it up to a shop in becker and we did a lot of stuff. Including new plugs, new synthetic oil, brand new tires, new battery, new oil filter, (getting rotors monday) and also gave it an alignment. 1000$ after all that. This is very puzzling to me cuz after all this happened the cars CEL was off and then when i hit about 3000rpm it comes on. Then while im coasting, itll come off...its weird. I as just wondering if you guys could shed some light upon the situtaion. It does have an aftermarket exhaust that just screams so it could be the 02 sensor??

IT would be much appreciated...
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Old 06-13-2009, 11:18 PM   #2 (permalink)
OMFG another one!?
 
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The O2 sensor could be a cause, and the after market exhaust may be a bit more likely; the back pressure is almost surely to be off.
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Old 06-13-2009, 11:35 PM   #3 (permalink)
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hey thanks for the help man
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Old 06-16-2009, 05:38 PM   #4 (permalink)
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check the O2 sensor.
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