1990 FORD F-350
150,000 MILES
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can't get heater to switch to floor. all other selections ( defrost/vent ) work properly. where do I begin to find the problem?
Dec 19, 2012 at 7:07 PM
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JDL
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Maybe a problem with vacuum or the directional door has problem.
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Dec 19, 2012 at 7:59 PM