O2 Sensor Problems - 98 Explorer 5.0 V8

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Jun 2, 2013 | 08:39 PM

#16

4.0 Beast

Elder User

Joined: Oct 2003

Posts: 504

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From: Gilbert, AZ

Quote:

Originally Posted by Peter Tykwinski

THANKS LOOKED, STILL DID NOT FIND IT,ONLY ONE THE BOOK SAID SOME CAME WITH JUST ONE ITS AN EARLY MODEL 3/96 V8

As far as I know, all the V8's came with 3 - 2 precat and 1 postcat. You might try looking in the engine bay or through the wheel wells.

Jun 2, 2013 | 10:50 PM

#17

shorod

Logistics Pro

Joined: Jun 2009

Posts: 4,816

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From: Cedar Rapids, IA

The factory service manual lists 3 sensors for the 4.0L and 4 for the 5.0L. I changed the sensors in my former 2000 Mountaineer V8 and there were 4 on that one as well. Both Sensor 1 sensors were pretty easy to spot from underneath and not bad to get to, but the two Sensor 2 sensors were still pretty to spot, but not as easy to get to and even worse to unplug and reconnect. One of the connections for a rear O2 sensor was located above the transmission. I've since read that there is an access panel under the center console but never confirmed that.

-Rod