Starts but dies, my truck is making me criminally insane
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 47
Likes: 0
From: Brownsville, Ohio
Year: 1991
Model: Comanche
Engine: 4.0L HO
I have checked my fuel pressure. I have checked my pump and sending unit. I have checked the circuit to the pump and sending unit. I have replaced every relay and fuse associated with the fuel and ignition system. I have replaced every sensor and switch associated with the fuel and ignition system.Is there something I'm missing that could lead the truck to start, idle quite high for 3-4 seconds, then begin to slow down so much in idle speed that it starts shuddering until it utterly dies? I'm starting to think this truck cannot be fixed.
CF Veteran
Joined: Oct 2008
Posts: 2,127
Likes: 2
From: Hell, CA
Year: 1989
Model: Cherokee
Engine: 4.0L I6
Ballast resistor, driver side inner fender, near air box. Has 2 wires connected to it. It is common for these to fail. To confirm, pull the 2 wires and jump them together and attempt to start/run vehicle. If this works, more permanently jumper the wires and voila!
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 47
Likes: 0
From: Brownsville, Ohio
Year: 1991
Model: Comanche
Engine: 4.0L HO
I have no current going to the ballast resistor even when key is in start or run. I think that's where I need to start looking for my problem
CF Veteran




Joined: Jun 2009
Posts: 2,607
Likes: 446
From: Michigan
Year: 1987 MJ, 1973 J2000, 1986 XJ, 08 JK
Model: Comanche (MJ)
Engine: 4.0L H.O
Fletch why are you digging up all the old posts under MJ tech? What's your angle man
Thread
Thread Starter
Forum
Replies
Last Post
Uuno
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
Jun 11, 2016 02:24 PM
co-MAN-che
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
33
Aug 24, 2015 10:57 AM
Kris smith
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
25
Apr 28, 2015 09:36 PM
93xj
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
Feb 2, 2010 05:44 AM
goat 834
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
9
Apr 9, 2009 07:56 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)



