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sprinkles08, ASE Certified Technician
Category: Ford
Satisfied Customers: 23004
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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Have a ford e-350 the front blower started to only work on

Customer Question

have a ford e-350 the front blower started to only work on medium and only moving down the road will not work on max air only on normal ac replaced the resistor did not change
Submitted: 11 months ago.
Category: Ford
Expert:  Joshua Haynes replied 11 months ago.
Hi my name is ***** ***** I will assist you
Customer: replied 11 months ago.
Customer: replied 11 months ago.
What do you think is wrong with the blower the Ford place replaced the switches last year they were melted
Customer: replied 11 months ago.
Is weird how it does started just stopping blowing then a little while would. Start back now does not seem to work stopped or on max ac will not work on high on normal ac just medium and only if your moving
Expert:  sprinkles08 replied 11 months ago.

Hello and welcome to JustAnswer!

If you only have airflow when moving and when not set to recirculation then it's natural airflow coming into the heater box because you're moving, rather than the blower motor working.

The problem may be the blower motor itself or a loss of power or ground to it. The first step in diagnosing the problem will to be use a test light to test for power and ground at the blower motor to see which, if either, is missing. Has any testing been done?