Operation CHARM
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Saab
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1983
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900 L4-1985cc 2.0L
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Repair and Diagnosis
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Powertrain Management
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Description and Operation
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Fuel Enrichment System
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On Acceleration
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On Acceleration
During acceleration the fuel booster pressure switch responds to the engine load by means of the pressure differential created, the switch closes, and the circuit to the cold start valve closes, thereby enrichening the fuel mixture.