Operation CHARM
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Ford Truck
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1992
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E 150 Van V8-351 5.8L
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Repair and Diagnosis
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Heating and Air Conditioning
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Testing and Inspection
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Heating System Diagnosis
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Insufficient Cooling, Heater
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A5: Check Pressure /Clutch Cycle Rate
A5: Check Pressure /Clutch Cycle Rate
Fig. 17 Insufficient A/C cooling diagnosis (Test A5):