02 sensor replacement causing backfire??
Thread Starter
|
Fleet Mechanic
Joined: Nov 2004
Posts: 1,857
Likes: 5
From: Northern CA
02 sensor replacement causing backfire??
I changed the o2 sensor on my son's '91 F150 302 AOD, hoping for a little gain in MPG. It looked exactly like the one I removed. A bosch unit, got it from Rockauto.
He indicated this morning that it was backfiring while accelerating from a stop and when it shifted gears.
Couple things; could an o2 sensor R&R cause a backfire? Is there a torque spec for an o2 sensor? Could I have overtightened it?
First thing I'm going to try is replace it with another sensor, since it ran pretty good prior to replacing it.
Anything else I might check while I'm poking around?
Thx.
He indicated this morning that it was backfiring while accelerating from a stop and when it shifted gears.
Couple things; could an o2 sensor R&R cause a backfire? Is there a torque spec for an o2 sensor? Could I have overtightened it?
First thing I'm going to try is replace it with another sensor, since it ran pretty good prior to replacing it.
Anything else I might check while I'm poking around?
Thx.
Thread
Thread Starter
Forum
Replies
Last Post
mikerans
1987 - 1996 F150 & Larger F-Series Trucks
18
Mar 20, 2013 01:00 PM
Rubicante
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
10
Apr 20, 2000 08:52 PM
