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post #1 of 2 (permalink) Old 11-10-05, 01:01 PM
daddy_o_1950
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ford f150

hello,,, im having truble with a heater in a 1999 f150, hot cold switch
wont work rightit wont blow out hot air till u start moving like just 10
ft,its like sumething kicks on. turn off main suitch and back on and cold
air agan till u move forward just a bit like sumthing is kicken it on, and
it wont switch to cool eather, ty for your help



 
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post #2 of 2 (permalink) Old 11-10-05, 03:01 PM
Backyard Mechanic
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Re: ford f150

"daddy_o_1950" <daddy_o_1950@yahoo.com> wrote:

> hello,,, im having truble with a heater in a 1999 f150, hot cold
> switch wont work rightit wont blow out hot air till u start moving
> like just 10 ft,its like sumething kicks on. turn off main suitch and
> back on and cold air agan till u move forward just a bit like sumthing
> is kicken it on, and it wont switch to cool eather, ty for your help
>


Sounds like a blend door problem.
it also may be a sticky actuator or a small vacuum leak.

UNLESS it's low coolant... difference being, if this happens if you switch
it while on freeway, and it still happens the same, it's not low coolant.

Could ALSO be in the controls
--
Yeh, I'm a Krusty old Geezer, staving off dementia here..DEAL with it!
 
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