91ls1silverado

So yesterday i went for a drive and it started to misfire when i would barely tap the gas to mantain the speed and i let go on the pedal and tap the pedal it would work fine and then it'll do it again. I went to my buddies shop and the scanner said that the o2 sensors are fucked and it was running rich. So i changed them last night and this morning i tried taking off and it was worse i had to put it back in the garage its running really rich now ever since i put the new o2 sensors, it was idling fine In the morning until i tapped the gas and it wouldn't keep idle...do i reset the IAC? RESET THE COMPUTER?

BandDirector Blk98ZM6

iTrader: (21)

If you have a K&N filter, it could be a dirty MAF...

91ls1silverado

Also when i revved it, it started to backfire..

tryintogofast

iTrader: (2)

Try unplugging the MAF and firing it up. It'll trigger a CEL and force the computer to run off the MAP sensor in a speed density type mode. Rev it and see if it still backfires.

Mike

Old Geezer

iTrader: (3)

Maybe, try the correct forum.. Like the tune/diagnostic. Might get more replies.

91ls1silverado

I did thank you