Bmw E34 Heater Valve Diagnosis

Brand rating 10 75 hvac heater hose.

Bmw e34 heater valve diagnosis. Has spent hours hooked up to the bmw diagnostic system at my dealer and they cannot find the faults. How to replace the gaskets in a bmw heater valve for e31 e32 e34 e36. My relatively new heater valve stopped working. 64118391417 search for e34 heater valve gasket set on ebay or other s.

If i isolate the heater valve electrical supply on the valves themselves and feed 12v direct from another source then they switch off ok and the heater core goes cold. Heater valve to left side of heater pipe 525i wagon 1992 95 heater valve to left side of heater pipe 535i sedan 1989 93 middle heater core. If this doesn t work change the heater valve and the auxiliary pump. The default position of the valve is to be full open.

If the heat will not turn off you likely have either a faulty heater control valve opens and closes the flow of hot engine coolant through the heater core or climate control panel output to the heater valve. In this video i go over what was wrong and show how i fixed it. Heater system page 2. This is an easy task you need to remove the 4 bolts on top of the heater valve disconnect the wires and then pull the valve out.