heater fan stuck on full bore - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 02-12-2012, 06:55 PM Thread Starter
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heater fan stuck on full bore

Even with the climate control module off the fan runs wide open. It started today driving down the road. the fan sped up to the same speed as when it was on 4 bars. I turn it up all the way and it speeds up. I turn it down and it slows down to the fourth bar speed, even though it only shows 1. Then it got stuck on full blast. soooo, as long as the key is on, the fans on full defrost. Obviously, I would like to fix this issue right away. I unplugged the fan motor for now. If anyone has any idea what might be going on, please share

2007 F-350 4x4 Outlaw
edge juice w/ attitude
MBRP 4" exhaust
6" fabtech on 37" MTs

1983 Porsche 944
white 5-speed

1979 mustang cobra
4.6 32V teksid
road racer/ street car

2001 GSX-R 1000
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post #2 of 5 Old 02-15-2012, 08:30 PM
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It's most likely the fan resister. I don't know where it is on these trucks but it went on my Liberty and my Jetta and I only had high until I replaced them. It's designed so you still have a defrost but only high speed if it goes. Hopefully one of the Techs will chime in soon.


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post #3 of 5 Old 02-19-2012, 10:45 AM Thread Starter
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I did some research and found that quite a few people had this issue. Everyone was saying the blower speed control module is the cause. I ordered one and I'm picking it up soon. I will report back when I find out if it worked or not.

2007 F-350 4x4 Outlaw
edge juice w/ attitude
MBRP 4" exhaust
6" fabtech on 37" MTs

1983 Porsche 944
white 5-speed

1979 mustang cobra
4.6 32V teksid
road racer/ street car

2001 GSX-R 1000
7t9cobra is offline  
post #4 of 5 Old 02-19-2012, 02:20 PM Thread Starter
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They really messed up. I sent my dad in to pick it up for me since I was out of town Saturday. They gave me a MAF sensor. F6dz-12b579-arm. Not even remotely close to what I need! Looks like the wait continues.

2007 F-350 4x4 Outlaw
edge juice w/ attitude
MBRP 4" exhaust
6" fabtech on 37" MTs

1983 Porsche 944
white 5-speed

1979 mustang cobra
4.6 32V teksid
road racer/ street car

2001 GSX-R 1000
7t9cobra is offline  
post #5 of 5 Old 02-21-2012, 11:08 PM Thread Starter
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Blower speed control module it is! All fixed.

2007 F-350 4x4 Outlaw
edge juice w/ attitude
MBRP 4" exhaust
6" fabtech on 37" MTs

1983 Porsche 944
white 5-speed

1979 mustang cobra
4.6 32V teksid
road racer/ street car

2001 GSX-R 1000
7t9cobra is offline  
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