97 xj help
CF Veteran




Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
#1 cause of no spark is no input sensor from the crankshaft position sensor.
Start by verifying the entire wiring run from the sensor up into the engine bay to the computer. Especially common to have a wiring problem here with an engine swap.
Start by verifying the entire wiring run from the sensor up into the engine bay to the computer. Especially common to have a wiring problem here with an engine swap.
Seasoned Member
Joined: Feb 2012
Posts: 369
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From: Oxford, OH
Year: 1996
Model: Cherokee
Engine: 4.0
Originally Posted by jeepin4fun97
The guy helping me did something with the key and pulled the codes off the odom and got a code 11
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CF Veteran




Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
It is located inside of the distributor. Verify wiring, connector, input voltage of 5 volts and then test the sensor itself; you'll need a service manual and a meter.
CF Veteran
Joined: Aug 2010
Posts: 1,168
Likes: 4
From: Williamsport, Pa
Year: 1997
Model: Cherokee
Engine: 4.0L
So did replacing the fuse help? Have you checked the cam sensor? Did you use the cam sensor from the '97? Have you verified firing order? If the distributor was swaped out, did you align it properly when reinstalling?
Thread Starter
Seasoned Member
Joined: Aug 2011
Posts: 404
Likes: 0
From: Oskaloosa Iowa 52577
Year: 1997
Model: Cherokee
Engine: 4.0
I replaced the fuse and the cam sensor and no change but my batt is real low so i need th charge it! And when i hook up my lil obd2 scanner to the plug it used to come on with just plugging it in now it dont!
CF Veteran
Joined: Jun 2009
Posts: 2,173
Likes: 0
From: Columbus, Ohio
Year: 1997
Model: Cherokee
Engine: 4.0, comp cam, 99 intake, apn header, neon injectors, Thunderbolt 2.5" High Flow Cat
Something isn't hooked up. No link from your scanner to your ecm? no spark? yeah... take a deep breath, and go over the wire harness again.


