help diagnose, bad o2 sensor?
help diagnose, bad o2 sensor? My c5 Vette had been acting weird lately, rough idle, surging really bad coming up to a stop light, but fine on the highway, anyway tonight all 4 plugs on the drivers side were super black and sooty, extremely rich, but the other 4 on paSS side were perfect, I put a new set of plugs in it and same thing in about 3 min worth of idle and driving time, I bought a new front o2 sensor and put it in but not sure if it fixed the problem yet as it just had ran in the garage for maybe 1 min but already seems better..... Oh btw, its not the coils cuz the temp gun said they all 8 were firing. And no lights or codes were on.........Any thoughts?
Update: The new Bosch O2 fixed the problem, it ran the fastest 2 passes ever & all 8 plugs looked great. Only problem is it must of burnt up the new O2 already cuz its back to acting weird and the a/f says 9.6 on the passenger side (new O2) & 12.9 on the drivers side (old AC Delco O2)
One thing, I've been running 50-75% Sunoco 110 (leaded) fuel in it along with the normal 93 pump gas, I've read that fuel will burn up O2's is that what is going on????
One thing, I've been running 50-75% Sunoco 110 (leaded) fuel in it along with the normal 93 pump gas, I've read that fuel will burn up O2's is that what is going on????
