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2002 F-150 ac problem

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  #1  
Old 04-11-2012, 03:07 PM
Jterr Jterr is offline
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2002 F-150 ac problem

How do I get the ac control switch out of the dash? Something must have come loose as I only get cold air or heat to the windshield...
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Old 04-11-2012, 06:08 PM
projectSHO89 projectSHO89 is offline
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You might want to check the FAQs in the HVAC section first....
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Old 04-12-2012, 10:47 AM
Jterr Jterr is offline
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You might want to check the FAQs in the HVAC section first....
Where might that be? I can't find a HVAC section...

Thanks
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Old 04-12-2012, 05:35 PM
projectSHO89 projectSHO89 is offline
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HVAC= Heating, Ventilation, & Air Conditioning. Any forum sections have titles that look like that?
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Old 04-12-2012, 06:55 PM
RebColonel RebColonel is offline
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I don't remember what the dash looks like in a 2002 model if it's anything like my 1999
the radio surround just pops off and the heater/ac panel is held in by screws.
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Old 04-12-2012, 08:48 PM
Jterr Jterr is offline
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Originally Posted by RebColonel View Post
I don't remember what the dash looks like in a 2002 model if it's anything like my 1999
the radio surround just pops off and the heater/ac panel is held in by screws.
Got it , must be something else as all looks ok; as much as I can see. Need to check someplace else
Thanks
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Old 04-13-2012, 01:03 PM
RebColonel RebColonel is offline
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Possible loss of vacuum to dash or blend air door. The blend air door is notorious about breaking on these models. If it is the blend air door you will have 2 choices. Either remove the dash to replace it or use a Heater Treater repair kit. I personaly would use the kit.
Look on You Tube for the video on how to. You can order them online.
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Old 04-13-2012, 02:50 PM
Jterr Jterr is offline
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Originally Posted by RebColonel View Post
Possible loss of vacuum to dash or blend air door. The blend air door is notorious about breaking on these models. If it is the blend air door you will have 2 choices. Either remove the dash to replace it or use a Heater Treater repair kit. I personaly would use the kit.
Look on You Tube for the video on how to. You can order them online.
I don't have a blend door problem; as I get hot and cold air. It is the changing from, say defrost to blowing out the dash vents. Nothing happens when I change the settings just keeps blowing out the defrost vents.


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Old 04-13-2012, 10:49 PM
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Check the vacuum supply line.
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Old 08-22-2012, 09:39 AM
AngelasFord AngelasFord is offline
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Originally Posted by Jterr View Post
I don't have a blend door problem; as I get hot and cold air. It is the changing from, say defrost to blowing out the dash vents. Nothing happens when I change the settings just keeps blowing out the defrost vents.


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I have the same problem,, I have checked the valves,, one was crimped as it had melted,,, still no luck. As I was driving yesterday I would hit bump, and it would switch to the dash, hit another bump back to the vents, then no cool air,, now its stuck in the dash
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Old 08-22-2012, 09:43 AM
AngelasFord AngelasFord is offline
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ac acting up again... help!

I have a 2002 f-150,,, I hate this truck, but I cant afford to replace it, so have to keep it running.

Yesterday while driving home, I would hit a bump and the ac would switchto the dash,, no cool air,,, hit another bump, switch to the vents,,, little cool air,, hit a bump and then back. Now its stuck in the vents with no cool air. I checked the vacume lines,,, had probs here before,,, fixed them,,, still nothing,,, stuck onthe dash....

please help, before I take it to a mechanic. I would love to fix and sell the thing,,,
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Old 08-22-2012, 10:58 AM
Jterr Jterr is offline
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I finally found the problem. It was a small vacuum line in the engine compartment. Fixed doing fine.
Thanks all
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Old 08-22-2012, 11:09 AM
Lime1GT Lime1GT is offline
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Originally Posted by Jterr View Post
It is the changing from, say defrost to blowing out the dash vents. Nothing happens when I change the settings just keeps blowing out the defrost vents.

'When function door is in defrost position, air inlet door vacuum control motor is at no vacuum, admitting only outside air into passenger compartment. Panel/floor door and panel/defrost vacuum control motors are at no vacuum, directing air airflow to defrost duct and side window demisters. Temperature can be adjusted to heat or cool air below outside temperature. A/C compressor will operate if outside temperature is above approximately 43*F (6*C). Blower motors is On.'

You're either not getting a vacuum source to the Panel/Defrost Vacuum Actuator or the actuator's diaphragm has a hole in it.
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Old 08-22-2012, 11:11 AM
Lime1GT Lime1GT is offline
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LOL, just before I typed this.
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