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Old 02-21-2012, 04:46 PM
Once you go black......

  

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HVAC blows on HI only?
What the title says! Old man's truck, only blows air on high. 25%, 50%, 75% do not function...
Any tips would be greatly appreciated

Cheers, Matt
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Old 02-21-2012, 04:52 PM
Powerstroke Techie

  

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Your blower motor resistor has failed.
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Old 02-21-2012, 05:39 PM
Once you go black......

  

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Quote:
Originally Posted by forddieseldoctor View Post
Your blower motor resistor has failed.
So just the resistor needs replaced? Seems like an easy fix to me, or am I wrong...
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Old 02-22-2012, 02:40 PM
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Yeah they are easy to replace. It is a very common problem.
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