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No Spark! Plz help..

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Old Jun 1, 2009 | 09:42 PM
  #1  
Reaperonin's Avatar
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Year: 1995
Model: Cherokee
Engine: 6 Cycle 4.0L
Question No Spark! Plz help..

Ok.

quick rundown,(before total no start)
Jeep stutters and stalls, pump gas, 50% of time will pick back up. Stalls a mile later.
Happening for month or so.


Yesterday.
Would not start at all. Assumed fuel problem since pumping gas recovered from stall. Replaced fuel filter, No love. Replaced Fuel Pump, No love. Replaced fuel pressure regulator, No love. Replaced Spark Plugs and Spark plug wires.. No Love.Replaced Distributor Cap + Rotor. No love!

(im not a mechanic, round about knowledge, but obviously not enough. Called mechanic, told me first thing.. Spark + Fuel.. I didnt think to check spark while plugs were out.. Assumed ... yea.)
Checked spark, No spark.

What could it be? please help.

Last edited by Reaperonin; Jun 2, 2009 at 10:12 PM.
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Old Jun 1, 2009 | 09:47 PM
  #2  
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Year: 1995
Model: Cherokee
Engine: 6 Cycle 4.0L
Default

someone requested in other thread, so


1995 Jeep Cherokee Sport 4.0L Automatic
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Old Jun 1, 2009 | 10:23 PM
  #3  
Reaperonin's Avatar
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Year: 1995
Model: Cherokee
Engine: 6 Cycle 4.0L
Default Need 95 Cherokee Spark Plug Wiring Diagram?

Can anyone give me a link to a wiring diagram from distributor to cap.

Its not in my manual? I think i did it right, but id really like to double check my work ya know what im sayin
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Old Jun 2, 2009 | 10:11 PM
  #4  
Reaperonin's Avatar
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Year: 1995
Model: Cherokee
Engine: 6 Cycle 4.0L
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(sorry submitted to wrong section)
BUMP!


Ok, So i took my coil out, tested it with om meter, it said about 11.7..

What is spec?

I assume that is good enough?

Is there anything between the ignition coil and the comp that could cause me to get no spark?

Is there a way that I can know for sure if its my computer or not? Id hate to replace it to be wrong.. .again.

Worst case scenario, can someone give me link to a place to buy a new comp?

PS, my coil is getting no juice. Tried to get it to ark off ground with screwdriver. Would not spark there either. So im assuming it is somewehre before the coil?

Last edited by Reaperonin; Jun 2, 2009 at 10:14 PM.
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Old Jun 3, 2009 | 12:53 AM
  #5  
red91's Avatar
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Year: 1991
Model: Cherokee
Engine: 4.0 L
Default

You say your coil has no juice I am assuming that you have the key in the on position when checking. One question if you try to start it does the engine catch and then dies when you release the key to the on position? If so it is your ballast resistor a little ceramic rectangle block about an 1&1/2 long attached to your fire wall above your engine. One way to be sure that is the problem, is to jumper the two leads together and see if she runs. That is the only thing I can think of off the top of my head from what you described. Hope thats it!!!
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Old Jun 3, 2009 | 01:54 AM
  #6  
1987XJ's Avatar
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From: Oak Harbor, Wa
Year: 1987
Model: Cherokee
Engine: 4.0 Renix
Default

check the cps (crankshaft positionng sensor)
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