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Cassier88

Cassier88 7/15/2016

2007 Jeep Commander Limited 8 Cyl 4.70L

Engine

I have a code p2098 replaced the o2 sensor twice still not running right have had it in the shop for a week, any help??

Feels like it's going to stall, especially when the ac is on, runs good for a while then runs like crap chugs and had a hard time acclerating than eventually goes

4 Answers


Jimm

Jimm 7/15/2016

P2098 = Generic Post Catalyst Fuel Trim System Too Lean Bank 2

Could be a stuck lean rear O2 sensor. This sensor is to check catalyst efficiency, sounds like the sensor could be bad. Recommend to replace the O2 sensors.

There are four (4) oxygen sensors on the 4.7 L V-8 engine; two each side of the exhust; one sensor each upstream and downstream of the catalytic converter.

Try the many on-line auto parts sources, such as; www.autopartswarehouse.com or www.rockauto.com for the replacement parts.
They (Rock Auto) list the O2 sensors from around $21.00 each for your vehicle.

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Jimm

Cassier88 7/15/2016

I have replaced it twice 😕 One generic and one from jeep

Jimm

Jimm 7/15/2016

You have replaced 'it' twice? What exactly is the...'it' you have replaced? All four (4) of the oxygen sensors have been replaced twice?

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Jimm

Cassier88 7/15/2016

The o2 sensor down stream behind the cat

Jimm

Jimm 7/15/2016

Recommend to replace the O2 sensors....as in all four (4) of them - depending how old, or how long ago the one downstream of the converter is. Might as well replace the remaining three sensors at least.

There are four (4) oxygen sensors on the 4.7 L V-8 engine; two each side of the exhaust; one sensor each upstream and downstream of the catalytic converter.

Try the many on-line auto parts sources, such as; www.autopartswarehouse.com or www.rockauto.com for the replacement parts.
They (Rock Auto) list the O2 sensors from around $21.00 each for your vehicle.

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0
Teddy B

Teddy B 7/15/2016

The Vehicle was in the Shop-- for a week !

They apparently have little in the way of
a Diagnostic Strategy-- to even find a problem

May as well start over & try second shop

The owner has to learn about codes & the
reason to test a vehicle

Installing any part isn't going to do a thing

The Converter may have been dead for years
from misfires & neglect

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