Multiple codes and engine bucking... what to do

Reply Subscribe

Thread Tools

Search this Thread

Oct 24, 2012 | 03:30 PM

#16

tjwalker

CF Veteran

Joined: Nov 2010

Posts: 5,840

Likes: 117

From: In the middle of Minnesota!

Year: 1999

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by 1998CherokeeXJ

Im having the same issue, the jeep runs normal when you restart it when this occurs. I took it to advance and code read it and got P0138 which means: Oxygen Sensor Short to Voltage Bank 1
Sensor 2
So I got a new magnaflow cat (old one was bad) and a new downstream o2 sensor. Still have to put them in but I have a feeling thats not what is causing this issue. I read to check my voltage to my MAP Sensor and to check my TPS and IAC. Can anyone tell me how to check these?

The majority of the time a P0138 is caused by the oxygen sensor itself. As long as your cat is bad, obviously you should install that as well while you're at it.

Get those two components installed and that should resolve your P0138. It is not likely related to the TPS or IAC.

Oct 24, 2012 | 05:51 PM

#17

1998CherokeeXJ

Member

Joined: Jul 2011

Posts: 151

Likes: 0

From: Greensburg, Pennsylvania

Year: 1998

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by tjwalker

Yah, but Im having the same problems Speeyo is having and I wasnt sure if a P0138 would cause that type of problem, Im not sure what it is if a P0138 isnt causing it. And from what im picking up If I unplug my IAC and my jeep runs fine then that is the source of the problem?

Last edited by 1998CherokeeXJ; Oct 24, 2012 at 06:02 PM.

Oct 24, 2012 | 06:02 PM

#18

tjwalker

CF Veteran

Joined: Nov 2010

Posts: 5,840

Likes: 117

From: In the middle of Minnesota!

Year: 1999

Model: Cherokee

Engine: 4.0

Don't get ahead of yourself. Install the O2 sensor and cat and THEN see where you are at.

One step at a time.

Oct 24, 2012 | 06:16 PM

#19

1998CherokeeXJ

Member

Joined: Jul 2011

Posts: 151

Likes: 0

From: Greensburg, Pennsylvania

Year: 1998

Model: Cherokee

Engine: 4.0

Okay, Im going to try to install them tomorrow after work and ill let you know if it fixes the problem

Nov 29, 2015 | 06:06 PM

#20

Jparsonschrkee

Newbie

Joined: Nov 2015

Posts: 13

Likes: 0

From: St Clair shores

Year: 1999

Model: Cherokee

Engine: 4.0

Hey guys any luck on figuring it out? I'm having the same problem with mine

Dec 1, 2015 | 02:48 AM

#21

1998CherokeeXJ

Member

Joined: Jul 2011

Posts: 151

Likes: 0

From: Greensburg, Pennsylvania

Year: 1998

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Jparsonschrkee

Hey guys any luck on figuring it out? I'm having the same problem with mine

I replaced both of my o2 sensors and that solved my issue. Do you a check engine light on?

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

1996 4.0 into a 2000/01 XJ - Build Thread

t.mcginley.jr

Jeep Builds

105

Jan 31, 2024 04:58 PM

88 Cherokee running rough, low idle.

Travis88XJ

Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here

Mar 12, 2016 07:26 AM

Fuel System Problems after overheating? Please help!

Ye Ol' Cherokee

Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here

Oct 9, 2015 10:29 PM

Paint non rust and non chip?

Hewittxj

Modified XJ Cherokee Tech

Oct 3, 2015 05:08 PM

My 97 xj isnt turning over

neocracka

Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here

Sep 5, 2015 06:50 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Reply Share

First
Prev
2 / 2
Next
Last