Upstream O2 sensor harness access

[bklynpanman]

Anybody here know the best way to access the upstream O2 sensor harness on the passenger side ? Don't want to remove the sensor while twisting the wires.

 

[Draiter]

Hey, when I put my h-pipe on I loosened the the two nuts on the header flanges and lowered the h-pipe down and then tightened the bolts back up so as to not stress the harness. I was then able to blindly get my hand up to the harness and disconnect it. I have gorilla hands and there was just enough room, to force my hand in there. I spent a few minutes just orienting my myself to the harness and connector and it was a piece of cake after that.

Cheers

 

[bklynpanman]

Awesome. Thanks so much for this info !! I love this forum.

 

[09BLKRED]

Remove the battery and battery tray and you can access the O2 sensor connector from the engine bay. Much easier than fishing for it from underneath the car.

 

[bklynpanman]

Can you really? It's not too far out of reach ? I imagine reaching down and my wife walking in the garage and seeing my legs up in the air. I guess I didn't think you could reach the top of the transmission where the harness is.

 

[Snoopy49]

View attachment Heated Oxygen Sensor (HO2S).pdf

 

[bklynpanman]

Thanks for posting this ^^^^^^^

 

[bklynpanman]

. Battery tray out. Going to need my kids hands to get back there.haha

 

[bklynpanman]

I

. Blindly get my hand down there. How would one disconnect a harness like this

 

[bklynpanman]

success

 

[Kapy]

So how did you finally do it?

I took my battery cover out tonight and cannot see a way to even get down there?? I see no room and it is quite a stretch over the fender?

 

[bklynpanman]

From the top I could barely squeeze a couple fingers down there. You have to be 125 pounds and bendy. I chose to go from underneath. I have a 4 post lift in my garage that allowed this. I removed the clamps from where the h pipe meets the catback. I then loosened the flange nuts all the way to the end of the studs. Pulled it back just enough to maneuver my hand up to the harness. I followed the advice of Draiter above