CEL, misfiring, sputtering, running like crap......help! - Bimmerfest - BMW Forums

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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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Old 12-12-2012, 08:27 PM
ekoms ekoms is offline
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Location: AZ
Join Date: Nov 2011
Posts: 9
Mein Auto: 95 325is / 01 330ci
CEL, misfiring, sputtering, running like crap......help!

First off it an 95 325is 2.5 auto. yesterday the fuel pump died on me, so I installed a new one.
car started & ran/operated perfectly until around 4pm today. I did the pedal trick for the CEL & its giving an 1221 code & the car is now misfiring, sputtering, running like crap, & pretty much undriveable. I know that the 1221 code is referring to the primary o2 sensor. what else should I look into. fuel filter was replaced a month ago & it idles fine. once the petrol pedal is pressed it starts running rough, missing & sputtering.

thank you.
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