My upstream o2 sensor is reading 0.6 volts 24% at idle and when driving it drops from 0.0 to 0.4 volts. My rear o2 which doesnt really matter but it reading 0.96 volts and 99% So do I have a bad upstream or what should it be operating at? Also the only code coming up on the pockelogger is running to lean but my muffler is dark black inside and my spark plugs are black as hell too. So wouldnt that be running to rich? The air/fuel gauge is also always around the lean side when driving.If you dont remember my car want to die at idle and the engine jerks after a couple secounds in each gear when I drive it.
Shawn 99 Eclipse RS Hahn Stage 2,Full built bottom end with je 8:8 and eagle rods ect..
#75821, "RE: Pocketlogger and 02 sensor" In response to Reply # 3 Jun-08-04 04:42 PM by eclipseman1999
Does it sound like my o2 is bad or not? When above idle it is 0.0 -0.8 and somethimes 0.12. Also why is the ecu and air/fuel gauge saying the engine is running lean but my plugs and exhaust are covered in black carbon shizit.
Shawn 99 Eclipse RS Hahn Stage 2,Full built bottom end with je 8:8 and eagle rods ect..
#75915, "RE: Pocketlogger and 02 sensor" In response to Reply # 5
Yes. It should cycle at idle, from as low as .60v (? can't remember) up to .99v or even 1.xxV if it's real rich. It will continually cycle up and down when in closed loop. The only time the voltage should stay constant is when you go into open loop. That's when you can get a reading on what your tune is.
Greg
'19 Genesis G70 3.3t AWD '88 Chrysler Conquest TSI
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