Question about Jeep Wrangler

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1987 JEEP YJ 4.2L 6 CYL - ENGINE STARTS TO SPUTTER AND DIES AFTER 20 MINUTES. RE-STARTS AND RUNS FINE UNTIL HOT AGAIN. RIGHT BEFORE IT DIES THE TACH STARTS JUMPING AROUND AND QUITS MAKING ME THINK IT IS AN ELECTRICAL ISSUE. - DISTRIBUTOR AND CARB HAVE BEEN REPLACED WITH REMAN UNITS. TWO PRO MECHANICS ARE STUMPED. ARE COMPUTERS / IGNITION MODULES PRONE TO HEAT FAILURE OR LOSSES CONNECTIONS AND GROUNDING THE MAIN CULPRITS?

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Coil / module assy fault. The heat is generated by the electric feed, it gradually warms up and internal parts seperate causing short circuits hence tacho goes hay-wire.

Replace module but pref replace coil and module together as coil is usually the initial cause.

Regards

Lloyd

Posted on Aug 27, 2010

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