no spark
#1
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Location: Saginaw, MI
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Year: 1991
Model: Cherokee
Engine: 4.0l
no spark
Ok I have a 91 cherokee 4.0l that the computer went out so I replaced the computer with same OEM number. Cranks but no spark. fuel pump operates also. traced it to the ignition coil so I pulled it off and it had some big cracks in the housing so I replaced it with a newone and still nothing past that point.
Was a daily driver to that happened.
I tested the connector to the Ign. coil 12V on the positive but on the neg. it reads around 47 ohms for 10 sec. then goes to zero. Is this a normal reading?
Also would using a screw driver to touch the plug wire post that goes to the distributer cap to the engine for a spark damage the Ign. coil?
Was a daily driver to that happened.
I tested the connector to the Ign. coil 12V on the positive but on the neg. it reads around 47 ohms for 10 sec. then goes to zero. Is this a normal reading?
Also would using a screw driver to touch the plug wire post that goes to the distributer cap to the engine for a spark damage the Ign. coil?
#3
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Year: 1991
Model: Cherokee
Engine: 4.0l
Thank you that is what I was just reading on, unfortunately it's snowing bad out and the jeep is outside so have to wait till tomorrow. Will let you all know the outcome.
#6
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Year: 1991
Model: Cherokee
Engine: 4.0l
Tested it as Jeep forum said to. set my meter at 2k ohm tested terminals B-C was reading -739, A-B= 0, A-C= -1182. According to that it could be faulty. Any thoughts? but like I said it "looks" like its new.
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