Why does my 1998 ford explorer stop blowing out of the front vents and start blowing hot air out of the floor vents and defrost vents when i start up a hill but when i get to the top it starts working right again why is this what do i need to check

ROBERT GARCIA

• 926 Answers
• Posted on Apr 25, 2009

SOURCE: 2000 ford expediton a/c is blowing air but not through front vent

the problem is a vacumm leak , the control panel works with vacumm from engine supplied by small hoses and also have an vacumm tank under right front fender , check for disconnected hoses or break, the main vacumm hose is on engine intake manifold, ahh , also check control panel

SOURCE: 2002 Ford Explorer When turned to defrost air

sounds like your door blend actuator which is under the dash and a pain to replace

SOURCE: Warm air from dash vents but cool air from defrost

The system just needs to get all the air pockets out if you switched everything like you said look around where the radiator hose meets where you put the thermostat in, there should be something on the lines of a little nipple with a 8 mm bolt on it i will have to pull up the exact setup of your Taurus but its the same general concept your car is fine you just have a big air pocket , what else you can do is while its cold right now and the car isnt running is to go take the radiator cap off the radiator and see if the antifreeze is low now that the car has cold down since you last ran it. If so feel it up top it off in the radiator and it might hurp it self and remove the air pocket all on its own... If you need any more help feel free im always on here id be glad to help more in detail once you try that and look under the hood for the bleeder ( the thing with the nipple on it) Also if you could please rate me i would greatly appreciate it.

Thanks,
Steve

SOURCE: 2002 ford explorer blower selection controls broken

Faulty door actuator motor or vacuum leak at heater harness under dash. commonly disturbed when installing stereos

SOURCE: The ac on my 1998 ford ranger only blows out the defrost vent and floor vent. How do I fix it?

Almost sounds like the actuators are inop. depending on which style you have, some are electrical motors and some are vacuum. These control the mode doors which move to deflect air to various vents.