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Pontiac
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2000
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Sunfire L4-2.2L VIN 4
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Repair and Diagnosis
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Maintenance
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Hoses
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Heater Hose
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Description and Operation
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Flow Control Valve
Flow Control Valve
The 2.4L engine uses the flow control valve (or H valve) in order to assist in the heater warm up. The valve attaches to the
heater hoses
. The valve is located between the engine and the heater core.