Finally got car running today after having heads reworked from a blown head gasket. Started not running smooth, then check engine light came on. Code 44 left bank which is drivers side of car right ??? While watching my scanmaster O2 L is fluctuating like it always has but O2 R isnt hardly fluctuating at all, kinda confused here ??? Drove the car about 25 miles to see if things would get better but no luck. Thank you for any suggestions. 1995 Z28.

 

not meaning to sound like a smart a@# but sounds like you need 02 sensors. When were they last changed? I think they are supposed to fluctuate, if it is not then it is bad, I could be wrong, but sounds like an 02 sensor problem either way

 

Guess what I was trying to say, kinda wierd code is for left side O2 even though it seems to fluctuate properly while right side hardly fluctuates, but in the mean time been doing some research here and also read Injuneers scanmaster write up. Wrote down all my readings with car at idle at operating temperature, from what I can see all the scanmaster readings are good except LBL is 160 and RBL is 128 so seems like problem on left side, maybe the O2 is gone on left side possibly head gasket blowing on #7 cylinder also took out O2 . I will check it out further tommorow.