Can anyone tell me which O2 sensor in my car is faulty? By the way, they were both replaced as part of a service a little over a month ago. No other engine work was done at the time (brakes, brake fluid, clutch slave cylinder replacement, etc). I began experiencing hesitation with a cold engine not long after the service. I?ve also had the car tuned at a different shop since they didn?t have a Dyno at the original place. The hesitation seemed to be better after the tune but after only a week it gradually reappeared. Anyway, here are the Datascan logs from both O2 sensors and as can be seen they are inconsistencies when compared. The question is, which one is misbehaving? Before anyone asks, yes I have disconnected them, one at a time, but the results were inconclusive.
although they both show positive movement, my $10 is on the left hand 02 being lazier than the right one how fast do they fluctuate when viewing in datascan? should move about 10 times every 10 seconds if working nicely.
Yes, but by the time when you get to operating temp (when they're needed) the left (passenger side) one doesn't have nearly as much 'sweep' as the right one.
Depends if you Are sitting in the car left, or out the front facing it right. good to see you back John.
