What should my resistance values be if my O2 sensor is working properly? I only found (1) 02 sensor also, is there more? Thanks for any help...

Nolan

 

To properly diagnose an O2 sensor, you need to watch the sensor voltage (in mV) and the activity of that voltage (lean/rich cross counts). On older vehicles, an oscilliscope is the tool of choice for accurately seeing the operational characteristics of your O2 sensor.

And yes, you only have one(1) O2 sensor.

*EDIT* - *Moving to 1st Gen Tech*

No need to double post your question...

 

thanks, ive seen several posts on here about emissions and the severity of removing them. I live in OKand there aren't any inspections much less emissions testing facilities.Is there a way to make or purchase an o2 sensor simulator for my vehicle. I see several out there for OBDII vehicles but none for OBDI? What type of reading is the ECM looking for? Is an O2 sensor a PTC/NTC type sensor? Thank your for your help.

p.s. sorry about the repost.

 

Your O2 sensor isn't used for emissions monitoring. The PCM uses it to determine the proper rate at which to inject fuel into the engine. It has to stay if you want your truck to run efficiently.

 

Sorry for the misunderstanding, I'm putting a full exhaust on my truck and Im wanting to eliminate the the cat and o2 sensor. Should have stated that, sorry for wasting your time.

 

No time wasted at all. As I already stated, you cannot eliminate the upstream (well the only one in this case) O2 sensor and hope to have your engine run properly. The PCM uses the air/fuel ratio information from the O2 sensor to determine how much fuel to put in.

Also, it is still a federal crime to remove emissions equipment from a vehicle originally equiped with ones. Just an FYI so you are prepared...

 

exactly removing emissions parts will really cost you big unless you are doing it for offroad only then it would have to be trailored to and from wherever you go.

 

Thanks everyone, apreciate the help.