Questions & Answers for: o2 sensor 2003 trailblazer cat

...O2 SENSOR OR CAT IS BAD. I DO NOT SMELL ANY ROTTEN EGG SMELLS SO COULD THE PROBLEM BE THE SENSOR. IS THIS SENSOR AN EXTERIOR OR AN INTERNAL ONE? THANKS GARY The sensor will be external and cats don't ...

2003 Pontiac Grand Prix service engine light on, pep boys said needed it new catalytic converter and o2 sensors. Got new cat and o2 sensors. Light has continued to come on even after they have reset 4

...O2 Sensor located on 2003 Ford Focus? Check Engine Light is on and trouble shooter device says the problem is in the O2 Sensor Heater Circuit, but where is it located. The code will tell you which O2 ...

...o2 sensor reading before cat is about the same as the one after cat computer asumes cat is not bruning exhaust good , iwould replace o2 sensors reset check engine light and go from there, that might ...

o2 sensor location?!?1 I have a 2003 Nissan Sentra SE-R Spec V My error codes show that there is a problem with o2 sensor. (sensor 2). I went to my mechanic and he couldnt find sensor 2. Please advice

...sensor one o2 sensor on my 2003 chevy suburban bank 1 on a chevy is on the drivers side youll have 4 O2 sensors sensor 1 bank 1 is on the engine side of the cat converter sensor 2 bank 1 is after the ...

...o2 sensers are there on a 2003 ford taurus with the 3 liter dohc v-6 2 O2 sensors and 2 catalytic converter efficiency monitors, they look like O2 sensors but are not, they are after the cat ...

...o2 sensor has gone, but i do not know where it is to replace it. Please help! The O2 sensors located beside the cat converter.The one is pre-cat converter and other is pro-cat converter.The 1 before ...

...O2 sensor is bad it will throw O2 codes and maybe a cat code (420). If the cat is bad, then only P0420. If the cam is bad it will set a cam code, but the ECM will go in default mode and still run the ...

...O2 sensor and the thermostat, but that made no difference. Changed oil and filter, changed fuel filter and pump. Still getting p1072. Can it be the catalytic converter? What do i do next? Yes , it is ...