Where is the 02 sensor located on a 1991 Jeep Cherokee 4.0?

Question

Needs to be replaced, need to know where to find it. Thanks!

Answer 1

Crawl under the jeep driver's side. Go toward the  front on drivers side of the engine an look at the exhaust pipe as it approaches the exhaust manifold. You will see it hanging out, usually  to  the outside of the truck with a 12" wire going to a connector. It will unscrew from there. Be Very careful with the new on as the ceramic prob is easily broken. Coat the  thread in never seize compound and reconnect the wires. Make sure they do not touch the exhaust pipe or they will  burn through.

Good Luck

Answer 2

follow the exhaust pipe coming out the engine