1- You could pull the distributor cap and make sure that the rotor has not melted (I have seen this once)
2- Then I would test the resistances of the coil.
3- If coil is good then I would replace the crankshaft position sensor.
Trained Professional Crack-pot
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94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new
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88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new