Operation CHARM
: Car repair manuals for everyone.
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Ford Truck
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1990
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E 350 Van V8-460 7.5L
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Repair and Diagnosis
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Powertrain Management
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Testing and Inspection
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Pinpoint Tests
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N - Ignition Diagnostic Monitor (IDM)
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N1 - N3
N1 - N3
Pinpoint Test N1 Thru N3 - Ignition Diagnostic Monitor (IDM):