100S Quattro Wagon (Canada) V6-2.8L (AAH) (1992)
Heater Control Valve: Service and Repair
Engine coolant shutoff valve
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Remove plenum tray.
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Loosen cap on coolant expansion tank to release pressure.
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Remove coolant hoses -B- leading to heater core and plug hose connections.
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Loosen hose clamps on intake and outlet of valve.
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Remove hoses from valve.
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Remove screw -A- and remove valve.