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.