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Hello guys. I have a stock 01 convertible with 97k on it. A few months ago I was getting one of the front 02 sensor codes so I replaced both fronts with Bosch sensors.
Then a little bit after that I got the p1153, p0151 and p1133 codes.
My average mpg went from 14/15 to 8. After a week or two the mpg went back up to normal for stop and go city driving but I still had the p1153 code popping up every so often.
I cleaned the MAF with right correct cleaner and put in a new air filter. I still havent done plugs or wires yet. The previous owner maintained the car pretty well tho.
Well today I was watching my 02 sensors on the Torque Pro graph and I noticed two jumping around like crazy. Bank 1 Sensor 1 and Bank 2 Sensor 1.
Check engine light isnt on but it does work because it came on one before.
Did I maybe get a defective 02 sensor from the store? The rears are not that important because Florida doesn't care about emissions and I read anything past the cats wont affect engine performance.
Thanks for any help.
Last edited by tracythompsontampa; Jul 8, 2018 at 03:01 PM.
No. The graphs that you posted are for one side (bank 1 in your case). Front sensors should be in constant motion from about .100 to .900 volts
Rear sensors should remain nearly flat. If a front and rear sensors mimic each other on the same side the PCM will assume a failed cat. Bank 1 looks fine on your car. Rear readings are a little high but that maybe caused by many factors.
No. The graphs that you posted are for one side (bank 1 in your case). Front sensors should be in constant motion from about .100 to .900 volts
Rear sensors should remain nearly flat. If a front and rear sensors mimic each other on the same side the PCM will assume a failed cat. Bank 1 looks fine on your car. Rear readings are a little high but that maybe caused by many factors.
Ooohh no I see I had it wrong in my head what side was what and what sensor was located where. I pulled over to google it and then I pulled up the app and since the app grouped them the way it did it threw me off. Everything does look in order then. I really appreciate the feedback and clarification.
02 sensor issues. pics and codes inside.
