"Brian, The Life of" (familycar)
07/26/2017 at 12:31 • Filed to: None
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"Brian, The Life of" (familycar)
07/26/2017 at 12:31 • Filed to: None | 0
| 10 |
Need some remote diagnostics on my HVAC bug. 2010 Ford Fusion with manual (single zone) HVAC unit. AC worked fine on my way to work yesterday. Blower stopped working when I went to lunch. The control unit has power so I’m sure it’s not the fuse. AC itself is still cold; I can feel it coming thru the vents at speed. Fan does not blow at any speed setting so I assume the resistor is not the problem. Anything else I should check before ordering a new blower motor?
razorbeamteam
> Brian, The Life of
07/26/2017 at 12:36 |
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Could still be the resistor. If it’s completely crapped out, then you might not get any speeds. Also, could be the switch itself is worn out. Contacts not making contact ya know?
TFSIVTEC drivesavolvo
> Brian, The Life of
07/26/2017 at 12:36 |
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Try jumping power directly to the blower motor
Wacko
> Brian, The Life of
07/26/2017 at 12:38 |
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love tap the blower motor.
I had a few cars that needed to be slapped once in a while.
crowmolly
> Brian, The Life of
07/26/2017 at 12:38 |
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Sounds like the motor to me. Not sure how tough it is to get to in a Fusion but you can try pulling the motor and bench testing it with a battery charger.
RamblinRover Luxury-Yacht
> Brian, The Life of
07/26/2017 at 12:39 |
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At a guess, a resistor unit/blower control module could still be it. It’s not been a simple set of resistors on the typical Ford for a while, at least with auto temp control. Did a 2002 Crown Vic resistor unit not long ago - dead anywhere other than the top setting, but there’s no inherent reason even for the top setting to work.
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Brian, The Life of
> razorbeamteam
07/26/2017 at 12:49 |
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I need to put a voltmeter on the power to the blower, that’s my next step I think. I always thought resistor issue is obviously because the fan blows on “high” only .. that not the case?
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Brian, The Life of
> Wacko
07/26/2017 at 12:50 |
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I’m really disappointed this didn’t occur to me before now, haha
jimz
> Brian, The Life of
07/26/2017 at 13:09 |
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that should be the case, since the resistors are only used for the lower speeds. “High” just sends the full 12 volts to the motor.
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razorbeamteam
> Brian, The Life of
07/26/2017 at 13:21 |
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The high only situation was what I had in the Range Rover. Then it overheated (the engine that is) and I had no speeds. Turns out the resistor fried.
You can tell a Finn but you can't tell him much
> Brian, The Life of
07/26/2017 at 15:14 |
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With the fan speed set to high check the voltage at the plug that goes to the blower. Should be 12v on one side and ground on the other. If that is the case it is likely the blower motor. Just a double check before loading the parts cannon.