a third O2 sensor ???
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 816
Likes: 0
From: peabody ma
a third O2 sensor ???
i replaced the 2 o2 sensors that are just in front of the cats on my 94 and when i was getting out from under the car i noticed a third o2 sensor right after the cat on the right hand exhaust...whats with that one?
thanks
thanks
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 816
Likes: 0
From: peabody ma
Re: a third O2 sensor ??? (RichS)
It is for the start of OBD2. The rear O2 is there to moniter the cat to make sure it is working. It has no effect on tunning the car.
