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Ford
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1990
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Pickup F150, 2D Pickup, 5.0 N, RWD, Standard, M5OD-R2
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes
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Test H - Fuel Control
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Test H: Step 29
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Circuits
Test H: Step 29: Circuits
HEGO SIG and GND circuits
HEGO harness insulation (near exhaust manifold)