No spark
05-07-2012, 08:23 PM
#1
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Location: Sterlington, LA
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Year: 1993
Model: Grand Cherokee
Engine: 4.0
No spark
Alright I've got a 93 model zj and I've replaced plugs, wires, distributer, rotor, and the coil still have no spark. I've read on here about the security system reset and tried the unlocking the passenger door 3x still nothing. Besides the computer I'm at a loss. Any ideas? Also what's the specific way to unlock the door? Maybe I did it wrong.
05-07-2012, 09:18 PM
#2
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Cam or crank sensor are the most likely causes, but check for blown fuses first. If there is a blown fuse you should check the wiring to the O2 sensor, sometimes the wiring will get fried on the exhaust manifold and short out blowing a fuse.
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