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no power to coil only power in fuze box?

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Old Jun 30, 2011 | 07:11 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question no power to coil only power in fuze box?
i replaced my cps.....i have no power to the coil.......i have power in my fize box....just have to power in my fuze box and power goin no where else....and a code 54
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Old Jun 30, 2011 | 10:11 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question
anyone!! PLEASE HELP?!?! she is sitting in someones driveway
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Old Jun 30, 2011 | 10:22 PM
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Year: 1995
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Originally Posted by goblinish15
anyone!! PLEASE HELP?!?! she is sitting in someones driveway
Check the wire.from the pcm that goes to the coil! Mine had a crack in the wire. It would fire sometimes and others not at all fixed wire, never fails now
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Old Jun 30, 2011 | 10:40 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question
could i run a fuse from the battery or fuse box with an inline fuse to the coil? or would my car never shut off or catch on fire?
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Old Jun 30, 2011 | 11:06 PM
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Originally Posted by goblinish15
could i run a fuse from the battery or fuse box with an inline fuse to the coil? or would my car never shut off or catch on fire?
The pcm sends a signal to the coil
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Old Jun 30, 2011 | 11:07 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question
so it could ba a bad ecu? ive got an extra one........
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Old Jun 30, 2011 | 11:16 PM
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Originally Posted by goblinish15
so it could ba a bad ecu? ive got an extra one........
Mine had a bad piece of wire
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Old Jun 30, 2011 | 11:21 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question
it seems like thats my problem how did u find your bad wire?
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Old Jun 30, 2011 | 11:27 PM
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Originally Posted by goblinish15
it seems like thats my problem how did u find your bad wire?
Got a diagram of the out put and tested it, it worked fine from the pcm but didnt always make it to the coil
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Old Jun 30, 2011 | 11:33 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question
seems like it would be faster and easier to just wire it from my battery with a fuse inbetween
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Old Jun 30, 2011 | 11:40 PM
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From: Ohio
Year: 1995
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Originally Posted by goblinish15
seems like it would be faster and easier to just wire it from my battery with a fuse inbetween
Sometimes faster and easier arent the right things to do
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Old Jun 30, 2011 | 11:44 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question
ya but i need to get it home cuz its sitting in someones yard.....would it work to wire it from the battery to the coil with an inline fuse? ive heard it be done. any ideas on how to do it?
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Old Jun 30, 2011 | 11:45 PM
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Originally Posted by goblinish15
ya but i need to get it home cuz its sitting in someones yard.....would it work to wire it from the battery to the coil with an inline fuse? ive heard it be done. any ideas on how to do it?
No clue, it should work
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Old Jun 30, 2011 | 11:47 PM
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From: McCall,Idaho
Year: 1991
Model: Cherokee
Engine: 4.0L high output with compressed valves
Question
ok so straight frrom the battery should work. hmmmm im thinkin it will either work perfectly......or my casr will not shut off or start when the ign. isnt turned over
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Old Jun 30, 2011 | 11:54 PM
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All ya can do is try
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