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Old 10-27-2007, 06:45 PM
summitseeker summitseeker is offline
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Fan for heater/ AC on high will not shut off

2005 Ford f350 6.0 with automatic climate control and blower fan for heater/ AC stays on highest setting even though it can be adjusted both on the steering wheel and the unit itself. Any suggestions?

I have already tried disconnected both batteries to see of the computer will reset itself and still a no go.
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Old 10-28-2007, 10:30 PM
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There have been at least two posts on this same issue over the past month. If my memory is correct, replacing the blower control module fixed those problems. Check these two posts:

http://www.ford-trucks.com/forums/66...-problems.html

http://www.ford-trucks.com/forums/63...c-problem.html
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Last edited by F250tuff; 10-28-2007 at 11:18 PM.
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Old 10-29-2007, 09:21 AM
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Thanks very much!! I honestly searched for a long time for this with no luck but thanks again for the link!!

Last edited by IB Tim; 11-01-2007 at 10:51 AM.
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Old 10-29-2007, 09:42 AM
summitseeker summitseeker is offline
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Guys....does anybody know where this Blower Control Module is located? My truck is out of warranty and if it is an "easy" fix, I will just pick one up from Ford myself instead of paying the $113.00 per hour they charge.
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Old 10-29-2007, 10:45 AM
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I actually found out that Blower Control Module is the complete unit with the buttons on it. Ford's price is $404.85 plus tax. Part Number 7C3Z19980GA... I am going to try to pull it out and find the broken resistor first. Does anybody have any experience with trying to replace the resistor on this module?
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Old 10-29-2007, 12:02 PM
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That sucks. I really don't see how the resistors are built into the digital display unit, unless they have changed over the years. The resistors are usually bolted into the air duct somewhere, and look like this:

http://www.amazon.com/dp/B000C7YCDC/...C&linkCode=asn

Good luck with it.
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Old 10-29-2007, 02:46 PM
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Quote:
Originally Posted by F250tuff
That sucks. I really don't see how the resistors are built into the digital display unit, unless they have changed over the years. The resistors are usually bolted into the air duct somewhere, and look like this:

http://www.amazon.com/dp/B000C7YCDC/ref=nosim/?tag=dealtime-auto-20&creative=380333&creativeASIN=B000C7YCDC&linkCode=asn

Good luck with it.
Hmmm...that is strange...now I am not sure what to do. I have no idea on where to find the resistor and if I buy the blower control module and it is not the problem, then I am stuck with it because it is an electronic item and they have no returns. One good thing is I can buy the module for $248.78 USF 10 minutes south of the border verses here in Canada or $404.85. What even worse is the US dollar is only worth .948 cents Canadian today so it is way cheaper for me to get in the border line up. It might end up being cheaper if I put it into Ford if I end up buying parts that do not fix the problem. I hate this electronic stuff!!
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Old 10-29-2007, 04:49 PM
toolman05kr toolman05kr is offline
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There is an electronic blower relay mounted on the AC box under the dash. This is most likely your problem.
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Old 10-29-2007, 05:10 PM
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Quote:
Originally Posted by toolman05kr
There is an electronic blower relay mounted on the AC box under the dash. This is most likely your problem.
Thanks a lot...I will see if I can find the relay and try that first before I replace the complete module. I am sure a relay has to be a lot less coin.
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Old 10-29-2007, 05:30 PM
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Just priced the relay and it is only $11.15! Let's hope it is that!
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Old 10-29-2007, 10:04 PM
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Got the part and for the life of me...I cannot figure out where it goes??
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Old 10-30-2007, 12:41 PM
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I got a diagram from Ford last night when I bought this relay and it shows that it goes in the hold where the fan motor is. I took quite a bit of it apart last night but could not find the relay anywhere. Someone suggested it is located "under the dash" but if anybody knows for sure can they please let me know?
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Old 11-01-2007, 09:36 AM
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Just an update: After tearing the whole heating system apart, I found out that the relay that Ford gave me is not in my truck. The one they gave me is the one for the manual control unit and not a truck with automatic climate control. Oh well...live and learn. I have the new (more expensive one) on order, but still no guarantees that this will fix the problem. Oh....I now know a lot more about this truck and know exactly where the alternative unit goes.
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Old 11-01-2007, 10:30 AM
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Thanks for the update. When you do receive your new part weather it fixes the problem or not can you please continue to update us.
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Old 11-01-2007, 09:37 PM
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Well...the strangest thing happened. I get in my truck to go to the Ford Dealership to pick up the alternative part that they suggested and the fan level is back to normal. The fan levels can be adjusted by both the steering wheel and module controls. I brought back the wrong relay and am expecting it to break soon. As long as it working I am not going to spend any money on a possible fix. If anything changes I will update this post.
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Old 11-01-2007, 09:37 PM
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