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Old 12-24-2010, 02:55 PM   #1
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No Spark replace everything!

I have a 1987 "Wrangler yj with a 2.5L 4 cylinder. I get no spark at all. I have replaced the ECU, coil, distributor, rotor. I have 12 volts coming into the coil at the yellow wire, 12 volts across the yellow and black. I am at a total loss. For a coil to work the 12 volt power must be disrupted. But on this model there is no lead coming from the distributor.

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Old 12-24-2010, 03:12 PM   #2
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Try the crank position sensor

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Old 12-24-2010, 03:19 PM   #3
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You sure the rotor is spinning?
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Old 12-24-2010, 04:00 PM   #4
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Where is the crank position sensor? And how does it connect to the coil?
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Old 12-24-2010, 04:05 PM   #5
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It is on the bell housing top drivers side this went out on mine bout 3 months ago and its where I would put my money...
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