NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > OEM Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

OEM Tech Discussion Forum for OEM (Original Equipment) or stock XJs and MJs.

Reply
 
Thread Tools Display Modes
  #1  
Old July 24th, 2019, 21:49
97xj_bandwagon 97xj_bandwagon is offline
NAXJA Forum User
 
Join Date: Apr 2019
Location: High Point, NC
Posts: 10
Crank, No Start, No Fuel Pump Priming, No Spark, No Gauges

1997 Jeep Cherokee Sport 4.0 AW4 NP242. I was driving the other day and the jeep was running fine and then cut off with no warning. Wouldnít start back up but it would crank. The gauges donít work but the lights in the gauge cluster work. Also the electric fan will kick on every time i turn the key to accessories. I got it home and realized the fuel pump wasnít priming when I turned the key, but the fuel pump relay would click. So i swapped the fuel pump relay with the ASD relay, still nothing. Also checked for spark and it turned out there was no spark. First thing that came to mind was a bad ground, so i cleaned every ground in the engine bay, that didnít work. Next i changed the cps, that didnít work. And then i swapped the ECU, that didnít work either. Any ideas???


Sent from my iPhone using Tapatalk
Reply With Quote
  #2  
Old July 25th, 2019, 19:29
8Mud's Avatar
8Mud 8Mud is offline
NAXJA Forum User
 
Join Date: Sep 2003
Location: Central Germany
Posts: 8,516
Re: Crank, No Start, No Fuel Pump Priming, No Spark, No Gauges

Check the orange wire going to the CPS or cam position sensor for 5 volts with the key in the run position. A partial short in a sensor can cause the input voltage to the cps (or most sensors) to be low and can trigger a no bus situation.

May be as simple as fuse issue, check those first.
Reply With Quote
  #3  
Old July 25th, 2019, 19:32
97xj_bandwagon 97xj_bandwagon is offline
NAXJA Forum User
 
Join Date: Apr 2019
Location: High Point, NC
Posts: 10
Crank, No Start, No Fuel Pump Priming, No Spark, No Gauges

Turned out to be the Fuel pump/pcm fuse.


Sent from my iPhone using Tapatalk
Reply With Quote
  #4  
Old July 25th, 2019, 19:34
8Mud's Avatar
8Mud 8Mud is offline
NAXJA Forum User
 
Join Date: Sep 2003
Location: Central Germany
Posts: 8,516
Re: Crank, No Start, No Fuel Pump Priming, No Spark, No Gauges

If you aren't getting five volts (some years it is seven) try unplugging sensors one at a time until the five volts (or seven) returns. Start with the cam position sensor. If you have a sensor short and are lucky, the five-volt power supply shuts itself down as a safety measure and there is no lasting damage.
Reply With Quote
  #5  
Old July 25th, 2019, 19:36
8Mud's Avatar
8Mud 8Mud is offline
NAXJA Forum User
 
Join Date: Sep 2003
Location: Central Germany
Posts: 8,516
Re: Crank, No Start, No Fuel Pump Priming, No Spark, No Gauges

Quote:
Originally Posted by 97xj_bandwagon View Post
Turned out to be the Fuel pump/pcm fuse.


Sent from my iPhone using Tapatalk
A good reason to troubleshoot from simple to hard and from cheap to expensive.
Reply With Quote
Reply


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

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Crank but no start. I can hear the fuel pump running. rc10t4orange OEM Tech Discussion 19 April 17th, 2018 13:31
1991 XJ no crank, no fuel pump, no spark. Xjcrawler736 OEM Tech Discussion 1 June 7th, 2012 09:19
Crank, no start; fuel pump not priming? kujito OEM Tech Discussion 29 July 10th, 2010 12:44
Fuel pump help; crank, no start. kujito Colorado Chapter 0 July 7th, 2010 07:58
spark fuel crank no start doaxj OEM Tech Discussion 13 November 15th, 2003 06:36


All times are GMT -7. The time now is 06:22.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014