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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 03-26-2006, 07:43 PM   #1 (permalink)
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Car running rich

My car is a 92 325i and is running very rich. I have replaced the o2 sensor but that did not fix the problem. Is there a way to adjust the mass air flow sensor to correct the rich problem. Thanks a lot
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Old 03-27-2006, 02:43 AM   #2 (permalink)
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how were you notified that the car was running rich? it would help me understand where to start
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Old 03-27-2006, 11:36 AM   #3 (permalink)
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My brother told me it's running rich. When the car is idleing the check engine light for the o2 sensor comes on and stays on until I press on the gas. This happenes at every red light I stop at. Also at idle it shakes and I have cleaned the ICV several times. Thanks
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Old 03-27-2006, 12:13 PM   #4 (permalink)
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ok do this pull the code up first, you can do it manually to see if its anything else that could be causing this.
http://www.bimmerwerkz.com/forum/mai...codes-555.html


running rich usually isnt too bad in terms of either lean or rich, what you can normally notice is a bit more black smoke coming from the exhaust. you may have to get some tuning done to solve your problem, another thing to check is if the intake system isnt in any way hindered (very dirty airfilter, kink in the elbow is sharp, etc)
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Old 03-27-2006, 03:38 PM   #5 (permalink)
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I would still check for things like leaky hoses and the elbow at the throttle body for cracks and stuff.
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