4.0 stalls shudders and misfires in reverse only. - JeepForum.com

 
LinkBack Thread Tools
post #1 of 7 Old 07-15-2012, 01:32 PM Thread Starter
piraterig
Registered User
2004 WJ 
 
Join Date: Jan 2011
Location: podunk
Posts: 261
Wj 4.0 stalls shudders and misfires in reverse only.

my 04 wj 4.0 stalls and misfires in reverse only. I was backing up a hill in town and it wouldnt go hardly, so i pushed the gas harder and it threw a code p0205. i scanned it. then i checked the wires to the injectors and saw nothing. its making it run rich when it shudders. but if i dont hit the gas its fine it will idle out of a parking spot and not miss. Like i said its only in reverse. I took it on the road and power braked it a bit to see if it would in drive gears, but it did not miss, the tire just spun. I have no clue what to check now. I even thought maybe fuel pump assy or filter but when i hold the brake and not allow it to even move it still stalls in reverse only. Maybe a TC issue? im sure its electrical seeing how its only in reverse gear.




Ive searched for 3 days and still cant find a answer. IM hoping its not a bad lifter. i dont have a constant taping yet but one that comes and goes when at and idle, like waiting in line or stoplights. just put in seafoam and will watch that issue hopefully clear up or im gonna be out 700 for parts to repair the lifters and ect parts.


04 WJ stock, saving funds for mods
95 ZJ 30x9.50s kumho at
96 XJ sport with stuff, sold
piraterig is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 07-15-2012, 05:41 PM Thread Starter
piraterig
Registered User
2004 WJ 
 
Join Date: Jan 2011
Location: podunk
Posts: 261
also it only does it when its warm... if i start it up in the morn and back up there's no problems. so can anyone help tell me where to look or any ideas??

04 WJ stock, saving funds for mods
95 ZJ 30x9.50s kumho at
96 XJ sport with stuff, sold
piraterig is offline  
post #3 of 7 Old 07-15-2012, 08:28 PM
MoparCharlie
Registered User
1995 ZJ 
 
Join Date: Jul 2012
Location: Kinnelon
Posts: 90
Swap # 5 injector with another cylinder and see if the code changes.
If it misfire follows the injector change it.
If not rewire the#5 injector back to the PCM.
If thet doesn't fix it changethe PCM
MoparCharlie is offline  
post #4 of 7 Old 07-16-2012, 09:44 AM Thread Starter
piraterig
Registered User
2004 WJ 
 
Join Date: Jan 2011
Location: podunk
Posts: 261
Quote:
Originally Posted by MoparCharlie
Swap # 5 injector with another cylinder and see if the code changes.
If it misfire follows the injector change it.
If not rewire the#5 injector back to the PCM.
If thet doesn't fix it changethe PCM
Ok ill try that today.. also it did it cold today first thing this morn in reverse, it usally is fine in the morn

04 WJ stock, saving funds for mods
95 ZJ 30x9.50s kumho at
96 XJ sport with stuff, sold
piraterig is offline  
post #5 of 7 Old 08-31-2015, 01:19 PM
Justchris
Registered User
2000 XJ Cherokee 
 
Join Date: Sep 2013
Location: LOS ANGELES
Posts: 2
This is also a recurrent issue with my 2000 Jeep Cherokee 4.0. Only in reverse codes are P0202 and P0204. Put in 2 new fuel injectors (2 & 4) as soon as I backed up it coded again and misfired. Then I reset and rode ok for 30 miles now it seems to misfire worse in forward and reverse. Any help greatly appreciated.
Justchris is offline  
post #6 of 7 Old 09-01-2015, 11:41 PM
Acc0919mc
Registered User
2000 WJ 
 
Join Date: Jan 2013
Location: East Palestine
Posts: 811
Theres a wiring harness on the rear left side of the engine that rubs on a bolt eventually shorting it out. Check it out and inspect it thoroughly. The reason it would do it in Reverse and not drive is because the engine torques the opposite way in reverse

2000 4.0L WJ "PB" - 2.5" Dynomax Catback - K&N Factory Air Filter - All Synthetic Fluids -Cooper Discoverer AT3's - 1" Addco Sway Bar
Acc0919mc is offline  
post #7 of 7 Old 09-01-2015, 11:53 PM
austinaubinoe
Registered User
2000 XJ Cherokee 
 
Join Date: Jan 2009
Location: Maryland
Posts: 1,231
I had an issue with my 2000 XJ stalling out in reverse. I had over heated the transmission and burned the fluid. Even after a flush it had issues in reverse. I added a can of sea foam trans tune and its been great for 10k miles or so. It sounds like your reverse valve body is clogged.

After about 1500 miles I dropped the pan, changed the filter, added a cooler and flushed it for a second time with full synthetic.
austinaubinoe is offline  
Reply

Tags
4.0 , misfire , reverse , stall

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Could use some help with my 4.7L (misfires) lvum4x4 WJ Grand Cherokee Forum 8 08-31-2013 02:08 PM
Time to see if the misfires are sorted.... grahamt7 WJ Grand Cherokee Forum 1 04-27-2012 06:15 AM
99 GC Limited stalls on reverse xowiickedox WJ Grand Cherokee Forum 5 03-26-2012 07:27 AM
Multiple Engine Misfires cbeck WJ Grand Cherokee Forum 7 01-22-2012 08:57 PM
04 Wj speedo jumps around and misfires zaathur151 WJ Grand Cherokee Forum 3 12-21-2010 09:38 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome