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post #1 of 3 (permalink) Old 06-16-2010, 12:04 PM Thread Starter
Join Date: Feb 2010
Location: Cobden Ontario
Posts: 6
Question Blend door problems

My 99 F150 had the heat stuck on at all times, so I started researching the problem through different Ford forums. I found lots of helpful information. This is what has happened so far. I cut through into the plenum behind the glove box and found that the Blend door would not move from tge open heat position so I thought that the blend door was not broken. next I removed the Blend door actuator and looked at the bottom of the blend door and it is not broken, now i was able to go back through the Plenum and move the blend door to close off the heat. The motor looks to be good all the gears are in good condition. So here is my next question.
I came across a comment on another forum that said- If the air conditioner wasn't up to pressure then the blend door wouldn't work. does anybody know if this is correct? it would have saved me a lot of work.
Thank you
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post #2 of 3 (permalink) Old 06-16-2010, 05:53 PM
shelbyx1's Avatar
Join Date: Oct 2008
Location: bonnyville alberta
Posts: 2,401
the blend door should still operate all positions(may not get cold)you may want to check power and ground to motor.

a moments silence for the shelbyx,i hope her new owner enjoys as much.
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post #3 of 3 (permalink) Old 06-17-2010, 11:24 AM Thread Starter
Join Date: Feb 2010
Location: Cobden Ontario
Posts: 6
Thanks for your reply
I have an electrician at work checking the motor and If I need to i can get one for around $50.
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