Why would my heat and defrost only work on speed 4(the highest)?
Jan 18, 2013 at 10:52 AM
2003 Ford Expedition Would Heat Defrost Only Work On Speed 4 Highest
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Chances are the blower motor resister needs replaced. It is common to only have the high speed work when they fail.
Jan 18, 2013 at 10:53 AM
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