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Buick
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1998
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Skylark L4-144 2.4L DOHC VIN T SFI
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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 flow control valve or H valve is used to assist in heater warm up. The valve is attached to the
heater hoses
and located between the engine and heater core.