hey yall.. about 4 days ago i bought 2 o2 senors.. both bank 2. replaced them both. went to autozone the next day and ran it. said that one of the senors i put in had low voltage but the other was fine. went out the next day and bought a another sensor for bank 1 sensor 1. ( this was also bad)ok.. went to autozone tonight and it said bank 2 sensor 2 was no activity, bank 1 sensor 2 was no activity and there were 2 other ones that said oxygen sensor circuit was no activity. or something like that.. basic story is that i replaced 2 bad 02 sensors in bank 2. had it checked, 1 of the ones i replaced was good. changed another sensor in another bank.. now they are all screwed.. wtf is going on? any help would be awesome. thanks you all. also, the scanner said i had %26quot; random multiple misfires%26quot; is this all the same problem?
I think o2 sensors bad and misfire?
take it to the dealer to have the pcm programming updated with software for 02 sensor failures and replace the fouled plugs. also may have intake gaskets leaking vacumm
I think o2 sensors bad and misfire?
check main fuses under hood sounds like computer is not getting signal
The o2 sencer get the blame for alot of things that goes wrong with the car. remember those sencers are at the end of all the rest. you need to look a little farthere in to all the sencers the ramdom miss fires could be the coil packs if you have them or the dist. if you don't. Some thing is telling the computer the wrong info. and this is what you got to find. the sencer may still work but giving the wrong info like the engine is cold and it really warmed up so you won't get a code for that.
Fix the multiple missfire code first. Bet it cures all your problems. Just because you have an o2 sensor code don't mean the sensor is bad. Just means it has read rich or lean for too long to suit the computer. the missfire can cause it to read rich because the fuel is not burning in the cylinder and dumping raw fuel in the exhaust. So the 02 sensor reads that as a rich burn and sets the code.
