e28 535 heater valve? - BMW Forum - BimmerWerkz.com

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post #1 of 2 (permalink) Old 10-25-2003, 10:16 AM Thread Starter
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Well, it gets cold early in Canada.

The heat goes cold, but eventually returns. Any hints on where to look first? The interior sensor was "relocated" when the drivers side kick panel fell off. (The PO had so many accessories attached it couldn't handle the weight.)

Anyone clean the temp control in the dash?

I checked the cooling hoses, they're OK. Last time I did blow off a hose...


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post #2 of 2 (permalink) Old 10-26-2003, 12:29 AM
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Heater Control Valve Part Number

If your heating system fails or is acting up, the first thing you should check/change is the heater control valve. When this valve starts acting up you will get symptoms from heat constantly on to it warms in stop-and-go traffic and cools at highway speed. The swap out is pretty simple and, if you work carefully and quickly, it is NOT necessary to drain any coolant before you change the core. Loosen the valve assembly from the firewall and lift it up as high as possible. A bungy chord can be used to hold it up. It is not necessary to buy the entire valve.

The part number for the core is: 64-11-8-390-132

The list price is $39.49
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