Sep 272011

2002 Ford Taurus with 113,000

Heater/defrost problem even after thermostat replacement, thorough cooling system flushes and added coolant. No reported leaks of any kind and fan blower works fine. Interior climate control switch doesn’t seem to work and the temp remains pretty much the same. Diagnose?

  2 Responses to “Heater/Defrost Problems”

  1. Most common cause is a failed Blend Door Actuator. This is an electronic servo that controls the hot/cold door in the dash ventalation system.

  2. I had this happen to me and the dealer replace this actuator and it was fixed, haven’t had any problems with it since.

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