o2 problem helpppp
07-13-2009, 05:04 PM
#1
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o2 problem helpppp okay guys i have a 97 camaro ss lt1... i have a check engine light p0131... the first bank first o2 sensor is reading low voltage... so hears the problem i have lt headers and i checked the driver side o2 in the collector all wiring is fine and sensor was replaced about 2000 miles ago... im also getting 2 other codes for the rear o2 sensors not having activity(ory so there are no sensors i havent had them tuned out yet) and the car is misfiring on cylinder 7(code p0307) checked wires all look fine also replaced 2000 miles ago... okay here is my question if i put my scan tool in operational data mode it tells me that the bank 1 first o2 sensors is reading 0.010v and that the bank 2 sensor 1 is reading 0.755v and both rear o2s read 0.455 because they are not connected im assuming... now should the bank 1 sensor read simialar to the bank 2 sensor? and would this cause it to misfire? mods are k&n cai, pacesetter lt,ory,walbro 255 fuel pump,and hypertech airfoil. any input would be really helpful im lost thanks in advance
07-13-2009, 06:03 PM
#2
P0307 is likely caused by by a burnt #7 plug wire. i would replace that wire and the plug, regardless if the wire "looks" fine.
The missfiring #7 cylinder could have caused the engine to run very rick on bank 1 and fouled out your bank 1, sensor 1 o2 sensor and it may need to be replaced. Doesn't matter how many miles are on a sensor, wire, or plug, you can always foul it out prematurly. Both front o2's should be oscillating between 0-900mV. Don't worry about the what the rear ones are reading at, they don't affect anything.
The missfiring #7 cylinder could have caused the engine to run very rick on bank 1 and fouled out your bank 1, sensor 1 o2 sensor and it may need to be replaced. Doesn't matter how many miles are on a sensor, wire, or plug, you can always foul it out prematurly. Both front o2's should be oscillating between 0-900mV. Don't worry about the what the rear ones are reading at, they don't affect anything.
