Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

01 just randomly will not fire. New starter recently and it has power

Thread Tools
 
Search this Thread
 
Old 12-08-2012 | 09:47 PM
  #1  
FleXJ01's Avatar
Thread Starter
Senior Member
 
Joined: Jul 2011
Posts: 671
Likes: 0
From: Chuluota
Year: 2001
Model: Cherokee
Engine: 4.0
Default 01 just randomly will not fire. New starter recently and it has power

video of no fire

So it just keeps turning and will not fire. I made 2 stops before this one where it died. Had to tow it home. Starter sounds like it works, its brand new, battery test good, sounds like fuel pump is good. So I just replaced the CPS with a new and still won't fire. Any thoughts?
Old 12-08-2012 | 09:55 PM
  #2  
Turbo X_J's Avatar
CF Veteran
 
Joined: Sep 2009
Posts: 8,567
Likes: 19
From: ☼ Blackhole Sun
Year: My Jeep is a GMC
Default

Any codes?
So it has no spark?
What is the fuel pressure in psi?
Old 12-08-2012 | 10:51 PM
  #3  
OEJ's Avatar
OEJ
CF Veteran
 
Joined: Dec 2010
Posts: 1,700
Likes: 0
From: S.Jersey
Year: 1999
Model: Cherokee
Engine: 4.0
Default

assuming fp and spark; check ALL grounds first. clean all grounded connections. make sure all sensor connectectors are cleaned with electric contact cleaner. then use diaelectric grease on all those connectors. i'm not saying clean the sensors; just the connectors. spray the cleaner then hit it with air. then apply the grease and plug in.etc.

i had this problem a year ago. did all that and the problem went away. i unbolted all the ground points and ground straps. i used emery cloth on all the ground contacts. sanded some of the grounding points to bare metal then reattached, then repainted that area. and put the diaelctric grease on them too. it would at the least, eliminate it as a possible cause.

hope this helps.
Old 12-08-2012 | 11:10 PM
  #4  
Turbo X_J's Avatar
CF Veteran
 
Joined: Sep 2009
Posts: 8,567
Likes: 19
From: ☼ Blackhole Sun
Year: My Jeep is a GMC
Default

Always disconnect the battery before attempting any work on the electrical system.
Old 12-08-2012 | 11:13 PM
  #5  
EVILXJ's Avatar
CF Veteran
 
Joined: Mar 2011
Posts: 1,273
Likes: 1
From: South Bend, IN
Year: 1995
Model: Cherokee
Engine: 4.6 stroker
Default

possibly crank sensor
Old 12-08-2012 | 11:19 PM
  #6  
OEJ's Avatar
OEJ
CF Veteran
 
Joined: Dec 2010
Posts: 1,700
Likes: 0
From: S.Jersey
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Originally Posted by Turbo X_J
Always disconnect the battery before attempting any work on the electrical system.
tru dat...lol.

Originally Posted by EVILXJ
possibly crank sensor
he allready replaced the cps.
Old 12-10-2012 | 11:16 AM
  #7  
FleXJ01's Avatar
Thread Starter
Senior Member
 
Joined: Jul 2011
Posts: 671
Likes: 0
From: Chuluota
Year: 2001
Model: Cherokee
Engine: 4.0
Default

So not trusting Tire kingdoms "spark" test as that just happens to be where it broke down near and I asked them to look at it. I pulled the coil, pulled a plug and put it in the top and got no spark. Could possibly need a new coil I am guessing. Might pull my buddies to test.

Last edited by FleXJ01; 12-10-2012 at 11:28 AM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
studmuffin
Modified XJ Cherokee Tech
16
10-15-2018 05:56 PM
Travis88XJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
19
03-12-2016 08:26 AM
riderjay253
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
09-16-2015 12:31 PM
TNXJsleeper
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
09-02-2015 06:31 AM

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



All times are GMT -5. The time now is 02:47 AM.