The heater control valve is typically mounted near the firewall, and acts as the valve that allows coolant to flow from the engine to the heater core, which is located inside of the vehicle
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Symptoms of a faulty heater control valve include:
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Heat remians on and cannot be turned down
Heat levels change without control changes
Higher than normal temperature gauge readings
Coolant leaks
No heat
Make | Model | Engine | Year |
Audi | 80 Saloon (81) | 1.6, 1.9 | 1972-1987 |
VW | Golf MK1 Hatchback 3/5 doors | 1.1, 1.3, 1.5, 1.6, 1.7, 1.8 | 1974-1983 |
VW | Jetta MK1 Saloon | 1.1, 1.3, 1.5, 1.6, 1.7, 1.8 | 1979-1984 |
VW | Passat | 1.3, 1.5, 1.6, 1.8, 1.9, 2.0, 2.2 | 1973-1988 |
VW | T2 Box | 1.6, 1.8, 1.9, 2.0, 2.1 | 1979-1992 |
VW | T2 Bus | 1.6, 1.8, 1.9, 2.0, 2.1 | 1979-1992 |
VW | T2 Platform/Chassis | 1.6, 1.8, 1.9, 2.0, 2.1 | 1979-1992 |