high....
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From: Grand Bay, Al
high....
My new to me 99 f350 has a great a/c but it only blows on high.
Am I looking at a blower motor, resistor, or the fan switch?
I'm greatful that it does blow on high being in SE TX and SW LA. If it didn't I couldn't ride in the ol girl. A black truck with no a/c is not happening this time of year
Am I looking at a blower motor, resistor, or the fan switch?
I'm greatful that it does blow on high being in SE TX and SW LA. If it didn't I couldn't ride in the ol girl. A black truck with no a/c is not happening this time of year
More Turbo
Joined: Mar 2013
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From: Carrollton, Ga
Sounds like the resistor in the blower housing under the hood. When the resistors burn out it stops working on that speed. There is a different ohm resistor for each lower speed and I don't believe there is one for high. You can ohm it out to check. If they reads open line the resistors are indeed bad.
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From: Grand Bay, Al
Ok thanks. I'll get that tomorrow.
Also the blower don't move enough air. I can barely feel it when driving. Is this because of the aftermarket blower? I know it has been changed became it has a pigtail on it and the factory one the plug is on the blower
Also the blower don't move enough air. I can barely feel it when driving. Is this because of the aftermarket blower? I know it has been changed became it has a pigtail on it and the factory one the plug is on the blower
Hotshot
Joined: Jan 2011
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From: Puget Sound
At first... I thought this was a thread about the new laws in Washington and Colorado. I saw something the other day that threw me off-balance: You know those people that stand on the sidewalk, twirling signs that advertise a business? I saw a guy on the side of the road with an arrow sign with the lettering "Got Weed?" The times... they are a-changin'.
Fan resistor.
Fan resistor.
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From: Grand Bay, Al
At first... I thought this was a thread about the new laws in Washington and Colorado. I saw something the other day that threw me off-balance: You know those people that stand on the sidewalk, twirling signs that advertise a business? I saw a guy on the side of the road with an arrow sign with the lettering "Got Weed?" The times... they are a-changin'.
Fan resistor.
Fan resistor.
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From: Bryson City NC
At first... I thought this was a thread about the new laws in Washington and Colorado. I saw something the other day that threw me off-balance: You know those people that stand on the sidewalk, twirling signs that advertise a business? I saw a guy on the side of the road with an arrow sign with the lettering "Got Weed?" The times... they are a-changin'.
Fan resistor.
Fan resistor.
There are times I just want to get up and choke the crap out of my TV !
Smokie
Cargo Master
Joined: Mar 2006
Posts: 2,502
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From: Bend Oregon
My second guess would be switch, do you have a volt meter?
For the low air flow issue it may be the heater core find are clogged with debris. If you pull the blower you can see it.
For the low air flow issue it may be the heater core find are clogged with debris. If you pull the blower you can see it.
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