Ford Super Duty (1999-2016) :: 2001 F350 - No Blower Motor / Just Defrost
Aug 6, 2015
Like the title says; I have a 2001 F350 with No blower Motor and Just Defrost, it is actually a friends, he is building a fence, and I am looking into the truck problem. The just defrost is probably a vacuum issue, but I do not have any book for this truck, so I have no vacuum or wiring diagrams. As far as the blower motor, I am thinking switch or motor, fuse has been checked? Is there any other "control" box involved with this year/model? Also any dash tear-out instructions, to make the access easier?
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2001 f350 blower motor for (A/C - Heater) works sometimes and sometimes does not.
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Last Oct. I noticed that my ac/heater started to intermittently stop blowing from AC fresh air/recir/vent/etc. mode and stick to defrost only. Do I have a bad switch and or a vacuum issue here? It's a '01 F350 CC 7.3 .....
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The blower motor went out on my 2008 F-350,? I can't for the life of me figure out how to get it out. Do I have to remove the dash? I am positive it is fried, I ran a hot wire straight to the motor and it still wouldn't come on.
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My A/C, vent fan (blower motor) keeps going in and out. Does not do it all the time, but when it goes out, it will come back on after a few moments, but will not run full speed. If you try to adjust the speed, it just cuts off again. What is causing this.
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my blower keeps blowing even when i turn off the system, it does stop when the motor is off but comes back on once i start the truck...relay is fine.
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2012 F350 Lariat 6.7
The blower motor has quit. All fuses relays etc appeared to be ok. So I tested the connector going into the motor, I saw 13.9 volts so assumed it was a bad motor.
After removing the motor I bench tested it by connecting 12volts to one side of the connector and negative to the other. It spun up.
I re-tested the motor supply connector in the vehicle, it has 13.9 volts on the yellow wire, and 4.44 on the other. I adjusted the fan speed on the climate control, although the fan images on the display increased, there was no change to the voltages on either line.
I used the 13.9v connection on the positive terminal and a ground on the negative, the motor spins.
Is there a method for accessing codes that will display what is causing this failure?
So why do I have 4.44 volts at what should be a ground? Is this a bad resistor or is the climate control euchred.
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I have a 2012 F-350 SRW with a 6.7 diesel. The other day I went to push the defrost switch and noticed it does not work. All the lights work in the switches, and the temp control works, but no matter what I push, defrost or floor, it stay in the vent only. Anything I can check??
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I have a problem with my vent selector on my truck. It's a 2005 f350 lariat. The vent is stuck on defrost, some times after a few mins I can get it to switch to floor but not always. I have replaced the pump, checked tank for cracks, disabled and plugged the auto hubs. The pump will shut off so I assume it's not a leak. I believe it's in the switching unit, can these be repaired? I found a lot of dust and dirt in the vac tank that had been sucked through a bad hub. I think it may need to be disassembled and cleaned. I have seen videos showing how to replace the orings in the older units. Are the newer style remote ones the same?
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Have a 2004 F-250 and blower motor speed 3 is not working..replaced resistor pack with Motorcraft part and everything works except position 3 ....
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My Blower motor is intermittently going on and off. After messing with it for a while it seems to stay on. Motor may be going out. Not real easy to change the blower motor on this 2008. Haynes manual says to take the 2008 and up trucks to the dealer.
2008 F250 4DR 5.4L
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Currently My AC / Heat blower motor operates but, speed 1 and 2 are the same, 3 and 4 are fine. I replaced the blower rheostat that is located on the firewall, but still no difference in fan speed.. A few years ago the blower only operated on Hi and the rheostat was the problem then.
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I have a 2003 super duty V10 4WD super cab long bed.
loud deep rumble noise when turn on the blower. both heat and a/c. removed the blower and seemed to turn ok. blew out all vents. removed heater radiator cover, checked most flaps to see if working. doesn't seem to be obstruction invent. the flap behind blower clear and functioning ok.
When on second speed, almost sounds like blower motor is out of balance. if run on high for 1 minute, smell electrical burning! Think to replace motor will work? will post another issue with radio and power windows
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I have and 07 F250 and the #2 speed for the blower motor don't work (hasn't since I bought it) I read that the most common cause of this is the resistor under the hood on the firewall so I replaced that and still no 2nd speed??? Where I look next? Motor itself maybe?
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My HVAC blower motor stopped today while the wife was driving the F250. I thought I should swap relays (with the heated mirror relay - same Ford Part Number) to rule it out or identify it as the culprit. However, since these are close to the firewall, I have a hard time getting the grip and leverage to pull the relay out of the Battery Junction Box (BJB). How to make this a bit easier?
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2006 f350 DRW King Ranch diesel with 94,000 miles on it. When I shift in to 4x4 the AC switches to defrost and then takes 2 min to return to the vents. I imagine this is a vacuum leak issue. Where to start hunting? I pulled the dash for another install and all lines were connected. I will say the vacuum pump stays on longer than normal when the ignition is first activated.
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Very strange things happening with 2009 F350 Gas, first the heater blower only is now working on high, progressively has gotten worse, low settings started not working a while ago, now only high works. Just recently the strangest thing, start the truck OK, turn on radio OK, turn lights on then the radio goes off. Will bring it to dealer in a day or two if I can't figure this one out.
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The heater blower in my 1999 F350 continues to run after the switch is turned off. I checked the relay and it is working properly. Looking for a wiring diagram showing the control circuit for the blower?
Do the heater switch controls power to the relay coil or if the switch grounds the coil to pick up the relay?
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2005 F350 Lariat ..... I cant get my AC to work in my truck.
AC will not cycle on, Originally thought the system was low because I jumped the pressure switch and it cycled fine (But did not cool inside the vehicle). Checked the pressure and it was in the 40lb range on the low side. My blower will only blow on high but I assumed it was a defective fan speed control.. Possibly an issue with the climate control?
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My 01 SD won't blow air anywhere but through the defrost vents.
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My defrost is stuck no matter which way I turn the control it won't come off. It just started doing this today. I think it might be a vacuum leak. When I turn my switch on the pump still clicking whether or not it's pumping.
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