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2000 Ford Taurus Question: Caan a defective water pump cause heater malfunction



rhtelt, Simsbury, CT, January 10, 2014, 22:25

The heater blows only cold air. Can this be caused by an inefficient water pump and/or thermostat frozen in the open position?

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  • Answer #1

    January 10, 2014, 23:19

    Either one can cause that but so can several other things. I always start with a new T-stat and go from there.

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