Hello all. I've been getting a circuit malfunction and no activity code from my 1,1 o2 sensor. Thinking wiring due to live data looked great, bouncing between .28 and .86 pretty fast with short trim sticking just + or - 0. Started at the top unplugged blue from the PCM sprayed boy and girl with electrical cleaner re-assembled.
Unplugged sensor, sensor side looked a bit cruddy gave both sides a good soak with spray then slapped them with dielectric grease and plugged them back together.
Voltage is now showing between .05 and .00. Fuel trims are dumping out of control +++
Could this be a result of the dielectric grease on the connector. I have always used this on my connections. Do these connectors somehow "breath". Have I done bad and if so suggestions on how to get that crap off.
THANKS!!! Jeff.

 

Ive been told never to use cleaners on 02 sensors that it can kill em. Time for a new one.

If you want,look up "3 wire o2 sensor s10" on google and enjoy a electrical heated sensor.

 

I had similar issues with an O2 sensor. Cleaned the harness connector real well and used die-electric grease on the terminals. Popped in a new delco sensor and it's been fine ever since.

You may have a poor connection at the plug. Inspect the female end for any dirty, bent or broken pins. A new delco sensor wouldn't hurt.

Cheers!
Joe

 

Yea Chris I just cleaned up the connector end the sensor itself remains in the bung untouched.
Joey I have a new delco on my desk but I cant get the old one out, previous owner must have stripped the the thread and then tack welded it in. Need to get to no-brand muffler shop and have them cut it out and replace bung. For some reason I still think somebody told me not to use the grease on the connector but if yours is fine guess they were confused with not getting it on the business end of the sensor. Thanks Guy's!

 

before you take it to have it chopped,try a small plumbers wrench. more you pull the tighter it gets! and its got a good handle for some leverage. I use em all the time. If it snaps etc,so what? you were going to cut it off anyways right?

 

I agree with chris. If you have a new one just get a large monkey wrench with the teeth and get a nice good grip of it. Try to use a cheater pipe too and see if she would budge.

Update us on your progress.

 

Sorry monkey wrench and cheater pipe were two days ago. It's off to the Central Americans. Thanks.

 

Took the fellas 45min to get it out and that was with lot's of torching, breaker bar and lift. $60 sounds a bit high but for what they went through no problem. New delco in there now running great. Sensor was original and only started with the codes at 165g's. Guess in 95 they still made parts to last.

 

glad its all fixed.

 

Ha! I would hardly say all fixed..........