Anyone have any tips and tricks for replacing oxygen sensors? I just rolled 110,000 miles and had one go bad, so I'm replacing all of them. Any help on the easiest way to get them out would help. Thanks.

 

#1. Spray them down a day ahead of time with something like PBlaster
#2. Get an O2 socket
#3. If they don't move, rather than rounding them out, get a blowtorch out and heat them up real good. Using a wrong sized wrench will round them very easily. The old ones should come right out if you get it glowing red.

 

Pretty much sums up the way I go about it. With that kind of mileage, I'm sure it won't be a walk in the park.

 

the size of the soket is 22mm, all O2 sensors are 22 mm, i it were a brand new car u can get away with a 7/8" wrench but seeing as u have 110k miles, 22 is better

there are two types of O2 sensor sockets, one is a deep socket with a slit for the wiring harness, the other is a crowfoot type with a slit for the wiring

my personal preferance is to use the boxed end of a combination wrench whenevr possible

 

I found it alot easier to just unbolt the exaust drop it down and remove them with a 22mm wrench