Sputtering and bucking

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Apr 27, 2020 | 04:27 PM

#16

Gryphon439

Junior Member

Joined: Jul 2010

Posts: 91

Likes: 1

From: San Jose, California

Year: 1991

Model: Cherokee(XJ)

Engine: 4.0

Tested the fuel pressure today, I got 38psi at idle and 42 at WOT. So now I'm left with O2 sensor, which should throw a code when it's bad, and someone mentioned to me that the Distributor Switch Plate for fuel advance has been known to go bad in the wiring loom. Anyone else know about this?

Aug 13, 2022 | 06:43 PM

#17

Bans1962

Newbie

Joined: Aug 2022

Posts: 2

Likes: 1

Model: Cherokee (XJ)

Quote:

Originally Posted by Blue94xj

I have a 94 Cherokee se. When i drive it and get up into overdrive it's wants to buck and jerk when I barely accelerate. Also it starts to pop through the intake and occasionally out the exhaust. New parts replaced in the last month.

Gas tank and fuel pump
Water pump
Thermostat
Fuel filter
Tps (throttle position sensor)
Idle air control valve
Air filter with K&N
Stock Muffler and gutted the cat due to it rattling
Power steering pump

I need help been chasing this problem since I've gotten the jeep. Anybody had this probes and found the fix?

check wiring harness from cps to ecm

Aug 13, 2022 | 07:38 PM

#18

Roler

CF Veteran

Joined: Jan 2012

Posts: 3,170

Likes: 312

From: Australia

Year: 1997 (RHD)

Model: Cherokee (XJ)

Engine: 4.0 ltr

Quote:

Originally Posted by Bans1962

check wiring harness from cps to ecm

I doubt he's still following this thread since he's not been here since 2016...

Aug 13, 2022 | 08:49 PM

#19

Bans1962

Newbie

Joined: Aug 2022

Posts: 2

Likes: 1

Model: Cherokee (XJ)

Quote:

Originally Posted by Roler

I doubt he's still following this thread since he's not been here since 2016...

But new people may see this as I had same problem and found degraded wire coating stock 99 jgc

Aug 15, 2022 | 08:06 PM

#20

OutbackOz

Member

Joined: Mar 2019

Posts: 154

Likes: 28

From: The Bush

Year: 1996 & 1999

Model: Cherokee (XJ)

Quote:

Originally Posted by Bans1962

But new people may see this as I had same problem and found degraded wire coating stock 99 jgc

what is the jgc?

Apr 16, 2023 | 10:20 AM

#21

computerpulse

Seasoned Member

Joined: Mar 2018

Posts: 292

Likes: 13

Model: Cherokee (XJ)

Engine: 4.0L

Quote:

Originally Posted by Jooman07

Well since the OP hasn't responded with whether or not any of the suggestions fixed the issue we don't know. Did you try any of the suggestions since it sounds like a similar issue?

I would check the O2 sensors