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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 05-29-2011, 08:54 AM   #1 (permalink)
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e46 running rich??? 330ci please help

i just bought an 01' 330ci in texas. I had it checked out by a bmw mechanic and he advised me to buy it and that it was in good shape. As i was driving home, after about 700 miles the check engine light came on. The car felt like it was bogging a little and the power wasn't as strong and consistent as it should be. I had the code read and it said that the car was running too rich in both banks. i am bringing it to a european mechanic but in order to avoid a ridiculous bill i would like to know what could be causing this. could it be a mass airflow sensor, throttle body, or what? please help!
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Old 05-29-2011, 09:36 AM   #2 (permalink)
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Lambda sensors? MAF? Throttle body?
Have a look at them...
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Old 06-17-2011, 04:59 PM   #3 (permalink)
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I had the same issue with the E36 I bought last year. I bought a MAF, installed it, and problem solved. It's a pretty inexpensive fix at about 85 bucks. Really simple to install, too.
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Old 06-18-2011, 05:25 AM   #4 (permalink)
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Also check that your air filter isn't passed it best. Another easy thing to check and replace if necessary.
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Old 06-18-2011, 09:08 AM   #5 (permalink)
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Good answer Brett, sometimes the easiest of culprits !
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