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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

heater vent switch?

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Old Dec 24, 2009 | 03:56 PM
  #1  
85mudtruck's Avatar
85mudtruck
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heater vent switch?

my heater is stuck on vent and i cannot get it to go onto defrost. the switch moves but doesnt change the direction in which warm air is moveing. In saskatchewan this is a big deal haha.... so if anyone has any ideas on whats wrong that would be great. (it still blows warm air)
 
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Old Dec 24, 2009 | 04:02 PM
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From: patricia ab canada
i know where your coming from i live in Alberta.do you have air conditioning, you say you have vents.i bet one of the doors is stuck.
 
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Old Dec 25, 2009 | 02:49 AM
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okay so how do i fix this?
 
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Old Dec 25, 2009 | 03:21 AM
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6fifty_f1fifty
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From: San Diego
only one way really is to take it apart and see what is keeping the doors from moving, could be something blocking the door(s), or something wrong with the cable that operates the doors. Only thing you got going for you is the ease with which the dash can be taken apart....
 
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Old Dec 25, 2009 | 08:41 AM
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From: Charles Town, W bygod Va
need to know if it has ac, they work with vacum and the ones without ac have a cable
 
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Old Dec 25, 2009 | 11:53 AM
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it is ac. so in other words i will have to start takeing apart the dash figure out which door is not working. but first check the cable?
 
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Old Dec 25, 2009 | 11:58 AM
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From: In my own world
ac is vaccume controled, check your vacume lines at the heater box outside 1st, then at the box inside behind the radio. sometimes the glovebox emptys itself out onto the heater controls. could just be a wayward ink pin keeping everything from moveing
 
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