I measured my o2 signal to ground. There is resistance. Also measured the sheilding to ground there is resistance.

So is this correct? I seem to be stuck at 4mv readings all the time like the 02 loop is no good.

Thanks,


O and the sensor housing to ground reads as well.
Any input.

 

Sensor wire to ground at ECU should be .4 to .9 volts.

 

Is this at idle?

I measuring this with the car off and battery disconnected. I was just measuring ohms to see where it was grounded.

thanks

 

Hmm - I have never ohm'd an O2 sensor.

Download the "fuel & emissions - NA" section of the manual & go to page 31.

There is a link to my copy in my sig below.

 

Not sure which link your talking about.

I measure the 02 body to ground. Below 1 ohm. Measure 02 body to sensor wire below 1ohm which looks like this should not be so.

I never measure voltage during idling etc. I will have to check this out later.

Thanks

 

will higher resistance cause richer running car?