Operation CHARM
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Ford Truck
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1988
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F 150 4WD Pickup L6-300 4.9L
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Pinpoint Tests
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Y - Erratic Ignition
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Y3 - Y4
Y3 - Y4
Pinpoint Test Y3 & Y4 - Erratic Ignition:
