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.

no spark !!!!!!

Thread Tools
 
Search this Thread
 
Old Jan 26, 2012 | 04:14 AM
  #16  
91xjcherock's Avatar
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 54
Likes: 0
From: bonney lake, wa
Year: 1991
Model: Cherokee
Engine: 4.0 h.o
Default

All fuses are good after searching more sounds like it could be the camshaft position sensor aka pickup coil will find out tomorrow.
Reply
Old Jan 26, 2012 | 07:21 AM
  #17  
Cherockee's Avatar
CF Veteran
 
Joined: Aug 2010
Posts: 1,168
Likes: 4
From: Williamsport, Pa
Year: 1997
Model: Cherokee
Engine: 4.0L
Default

I'm not clear on exactly what your getting, but it sounds like the fuel pump only works if you "jumper" the relay. If that is the case the cam sensor is not your first problem as the fuel pump is primed as soon as the key hits the ignition position- at which point the cam sensor isn't doing anything yet.

Work the problems in order, it'll make life much easier.
Reply
Old Jan 26, 2012 | 02:47 PM
  #18  
91xjcherock's Avatar
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 54
Likes: 0
From: bonney lake, wa
Year: 1991
Model: Cherokee
Engine: 4.0 h.o
Default

I can get fuel easy my problem is no spark if you read the whole thread
Reply
Old Jan 26, 2012 | 02:55 PM
  #19  
ck88jeep's Avatar
Junior Member
 
Joined: Dec 2011
Posts: 40
Likes: 0
Model: Cherokee
Default

0n my 88 xj i had to tighten up all the relay connections on the pass fender. plus i cut the c101 connection out and soldered the wirers back together. havent had a problem sence. good luck
Reply
Old Jan 26, 2012 | 02:55 PM
  #20  
Cherockee's Avatar
CF Veteran
 
Joined: Aug 2010
Posts: 1,168
Likes: 4
From: Williamsport, Pa
Year: 1997
Model: Cherokee
Engine: 4.0L
Default

I think the point I was making is IF you only get fuel because you jumper the relay for the fuel pump then you have bigger problems than a cam sensor. Keep in mind the ECM contols a lot of things. Most of them must work in order for the Jeep to start.

Do you have a FSM? The manual tells you how to check these sensor and eliminate things in a specific order. You might find that the BECAUSE the circuit that powers up the fuel pump normally isn't working, that the EMC may be telling the other parts of the ignition system to not work also.

As I read through your thread the last thing I saw about the fuel pump is that you could get it to run if you jumpered the relay. You didn't say you fixed that problem yet.
Reply
Old Jan 29, 2012 | 05:08 AM
  #21  
91xjcherock's Avatar
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 54
Likes: 0
From: bonney lake, wa
Year: 1991
Model: Cherokee
Engine: 4.0 h.o
Default

All new relays and senors: cam and crank, cap/rotor and pcm. Checked grounds and ballist resister going through the harness but still can't figure it out also changed ignition switch......what gives
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Paco182
Jeep Builds
30
Jul 1, 2025 04:38 PM
cpnwrench
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
May 5, 2024 12:21 PM
91cherokeeSC
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
41
Oct 29, 2015 01:49 PM
Jeremy Millner
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
Oct 2, 2015 02:21 PM
WoodysOffroad
Introductions
2
Sep 28, 2015 03:37 PM

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



All times are GMT -5. The time now is 10:10 AM.