Please help: Oxygen sensor location?
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New User
Joined: Mar 2005
Posts: 4
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From: Texas
Please help: Oxygen sensor location?
Hi everybody, I have a '91 Explorer Sport, and I am getting ready to change the HO2s's and according to the repair manual, I have two sensors, one on the left exhaust manifold, and one in the Y-pipe. Now I have already found the one in the pipe, but I have searched every inch of both manifolds and have found nothing. Mine is a August of '90 build, and I have found a few parts were changed or moved around from the later '91 builds, could this be another?
I would appreaciate any help, its driving me nuts!
I would appreaciate any help, its driving me nuts!
Postmaster
Joined: Dec 2001
Posts: 3,742
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From: UT
sonme DIY manuals are too generic for such information. '91, '92, and some '93 Explorers only had one O2 sensor (the one in the Y pipe that you've found). I recommend that you stop looking for the non-existent 2nd O2 sensor.
Senior User
Joined: Nov 2003
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From: Bucks County, PA
I believe multiple O2 sensors were introduced starting with the 1996 models which had the OBDII system. Prior to that only one sensor. If your manual covers multiple years of Explorers that could the reason for the confusion.
Postmaster
Joined: Dec 2001
Posts: 3,742
Likes: 2
From: UT
Originally Posted by don96exp
I believe multiple O2 sensors were introduced starting with the 1996 models which had the OBDII system. Prior to that only one sensor. If your manual covers multiple years of Explorers that could the reason for the confusion.
