O2 Sensor Location

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Feb 7, 2004 | 06:32 PM

fishes

Thread Starter

New User

Joined: Jul 2003

Posts: 6

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O2 Sensor Location

For my beautiful 94 Ford Explorer, 4.9L, 4WD....

I have replaced several parts and cleared out all the pesky codes except for:

176 : Heated Exhaust Gas Oxygen Sensor - voltage signal indicates lean (Bank 2)
and
177 : Heated Exhaust Gas Oxygen Sensor - voltage signal indicates rich (Bank 2)

Hmmm...same sensor indicating both rich and lean? Sounds like a bad sensor to me.

So here is my silly question: Where do I find the Bank 2 HEGO Sensor?

I have seen several posts on O2 sensor locations that seem to be conflicting (left side, right side, passenger side, driver's side) so please make it simple for me, a product of a rural west Texas education.

Thanks,

Fish

Feb 8, 2004 | 10:34 AM

Blly177

Senior User

Joined: Oct 2003

Posts: 234

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From: CT

are you sure you have a 94 because it did not come with the 4.9l and even if it did it would have awd not 4wd. anyway sounds like you have a vaccum leak or a clogged fuel filter