O2 Sensor
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Senior User
Joined: Dec 2006
Posts: 200
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From: Fulton IL
O2 Sensor
I was crawlin around under my 96 f150 351 when i found an oxygen sensor hanging back by my transfer case. are there supposed to be two O2 sensors in the exhaust.i have a fake duel that i plan to make a true dual. is this affecting my gas milage? The truck runs fine though.
Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
The 2nd o2 sensor is part of the additional diagnostic system that a 96 vehicle such as yours has. It is a sensor that will tell the computer if there is a cat converter problem.
It also makes it so you can't remove the cat w/o a dummy sensor...but cats should be used anyway.
It also makes it so you can't remove the cat w/o a dummy sensor...but cats should be used anyway.
