Mechanics

FORD F-150 HEATER PROBLEM

1979 Ford F-150 • 97,704 miles

What should I do no heat fan blows on ac but do not blow heat when you turn on heat
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Guest
February 11, 2013.



Check to see if both heater hoses are hot. It may be a bad water valve not letting heat go through to heater. Check for a vacuum leak also check for a bad blower relay and check behind switch it may be burnt up when put on heat.

Hmac300
Feb 11, 2013.


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