O2 sensors on back ?

[the blur]

How bad is it to do all 4 O2 sensors on your back ??

 

[iamdub]

Probably pretty bad. Sounds painful. I've never done the O2 sensors on my back. Didn't know I had any there. How often should they be done? Mine are 38 years old.

 

[Fless]

Probably pretty bad. Sounds painful. I've never done the O2 sensors on my back. Didn't know I had any there. How often should they be done? Mine are 38 years old.

Not only that, they're hard to reach. And mine are waaay older than that!

 

[thompsoj22]

just did both upstream "on my back" yea pita, but can be done. wear goggles to prevent debris from falling in your eyes. used 1/2 drive ratchet with 18 inch extension and wobly between the ext and socket. i cut the old harness at the o2 sensor to enable the use of a deep socket. installed them with stubby wrench as the new harness prevents the use of a socket. downstreams are a breeze. buy/rent the o2 socket to make things easy. you can do it, from 1 to 10 id rate it a 6. nothing underneath a vehicle is easy/comfortable "on your back".