Operation CHARM
: Car repair manuals for everyone.
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Dodge or Ram Truck
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1990
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B150 1/2 Ton Van V6-239 3.9L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Idle Speed
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Adjustments
Idle Speed: Adjustments
1988-90 V6 & V8:
Run engine for two minutes and shut off. After 60 seconds, disconnect ISC and Coolant temp. sensor connectors. Adjust extension screw on ISC to adjust.