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Jeep
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1984
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Wagoneer Base, 2.8 W, Standard
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Repair and Diagnosis
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Engine Performance
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Ignition System
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Ignition System - HEI
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Testing
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Electronic Spark Control (ESC) Testing
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Notes
Electronic Spark Control (ESC) Testing: Notes
NOTE:
Electronic Spark Control (ESC) is used on some Chevrolet and GMC models using the 5.0L 4-Bbl. (VIN LE9) engine.
Fig 1: Wiring Diagram for HEI System w/ Elect Spark Control (ESC)