Auxillary heater not working on 1995 Ford E-150

When I turn on heat in front and rear I don't get any heat from the rear vents only cold air? I have already replaced the heater core at the firewall due to leakage issues so that is fine. What is the next step in diagnoses?

by in Federal Way, WA on November 29, 2010
1 answer
ANSWER by on November 29, 2010
There is a blend door motor back there to turn from cold to hot. This motor is likely not working. Naturally verify there is no air pocket in the system either -- the auxillary systems are hard to purge indeed.
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