Motorator Experts - HVAC fan has a mind of it's own. Fan blows full, or not at all...or in between. Happens on auto or manual. Anyone?

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HVAC fan has a mind of it's own. Fan blows full, or not at all...or in between. Happens on auto or manual. Anyone?

Will replacing the dash unit fix it? Rheostat?

Asked by: smokewagon

User type: Enthusiast

Asked on: April 07, 2008 14:42

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Answers

gamera
User type: Enthusiast
Posted: about 1 year ago

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The fan in most cars is an electric blower motor. If the fan is not working properly, its likely the result of a bad blower motor or switch. I would start at the switch. Replace it or bypass it and see if that solves your problem. If not, then move on to the blower motor. If the a/c is still cold when its on, then this is sure to be an electrical issue, not a problem with the a/c system.

TheRipper
User type: Enthusiast
Posted: about 1 year ago

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What kind of car? Some cars have a know issue with the fan control modules, i.e., BMW's etc. More details will help get your problem diagnosed, and a solution (hopefully a low cost one at that!)