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My heater will only blow if its on 4 the highest number. what does this indicate?
1999 Mercury Villager

My heater will only blow if its on 4 the highest number. what does this indicate?

(1999 Mercury Villager)
This is how it works it doesn't blow heat from 1,2,or 3.
2 answers & 1 comment
Popular Answer
What if it does that when you turn the a/c on? Is it indicitive of the same problem?
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yes, same issue
General Diagnosis
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What if it does that when you turn the a/c on? Is it indicitive of the same problem?
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yes, same issue
on March 29, 2010
Usually this means that the blower motor resistor is bad and needs replacement
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