alconk

iTrader: (1)

I have a 94 Z with the typical mods, cam, heads, ext. and it started to run like crap. Felt like it was missing badly. I checked the plugs, wires and were good. I did notice the day I pulled out of the garage the floor was damp from being so humid and thought maybe I had moisture in the cap. After about 40 miles of driving it started to come out of it and would intermit. Finally the SES light came on and turned out to be a code 13 (left back O2 malfunctioning) When it is in open loop the left O2 is reading 400ish mv and the right is 800-850 and staying steady where the left is bouncing around. Can what I described be from a bad O2 sensor? If anyone ask they are GM parts.