Blower motor resistor
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Mountain Pass
Joined: Aug 2003
Posts: 105
Likes: 1
From: Michigan
Blower motor resistor
What makes it fail?
I replaced it earlier this winter. It worked for a few days, and then stopped. I just bought another, but don't want to install it until I can figure out what caused it to fail in the first place!
I'm an electrical moron, so the more details the better!
Thanks!
Kevin
'03 F250 FX4, CC, V10
I replaced it earlier this winter. It worked for a few days, and then stopped. I just bought another, but don't want to install it until I can figure out what caused it to fail in the first place!
I'm an electrical moron, so the more details the better!
Thanks!
Kevin
'03 F250 FX4, CC, V10
Lead Driver
Joined: May 2003
Posts: 9,303
Likes: 48
From: Lyndonville, Vermont
They need air blowing over them to cool them so if the blower isn't running it could fry sometimes. Or if there is a nest in there..So if you have an intermittent blower motor the resistor could get hot. Esp if something is keeping it from turning freely. Other than that the blower motor could be bad and drawing to much amperage.
Dick
Dick
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Mountain Pass
Joined: Aug 2003
Posts: 105
Likes: 1
From: Michigan
No, positioning works (defrost, vent, floor, etc). The blower blows just a trickle when on any position other than high. On high its blowing hard.
K
K
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Fleet Mechanic
Joined: Jul 2005
Posts: 1,800
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From: Southern Colorado
I had a bad blower motor in an Explorer that kept taking out the blower resistor. The motor seemed to run ok, but was drawing far too many amps for the resistor pack to survive. I was getting resistor packs at junkyards (by the handful), so it was cheap to learn this. Sadly, Ford HVAC stuff eventually needs about every part replaced, and this Explorer was no different.
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