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Ok sure enough it was the Ignition Control Unit, replaced it and the Wagoneer runs like a dream. Thanks.

Update I have taken one spark plug out turned over the car and got no spark, when I tested the coil from the positive terminal of the coil 6.48 volts (is that normal???) I also checked the negative side of the coil and got 1.55 volts I'm not sure if that's normal or not, I had timed the car...

Hello all my names Wil I own a 1990 jeep grand Wagoneer, I've been having a very strange problem with my Wagoneer, when I crank it over for the first turn I will get exactly (pretty inconsistently) one spark and nothing more until I stop running the starter and then I will get one more spark...