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Running the AC compressor uses horsepower, and the truck does not have enough to overcome the loss.

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โˆ™ 2011-12-27 23:37:51
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Q: Why does your expedition run worse when you turn on the air or heater?
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Heater problems on ford 1999 expedition?

the heater blows warm air when fan is on low but blows cold air when fan is turn to higher setting


Where are the heater filters in a 1999 expedition?

To the best of my knowledge, there is no heater or outside air filter on the 1999 Ford Expedition, and Grease Monkey confirmed that when my Expedition (Eddie Bauer version) was in for service.


1998 Mazda b2500and when you turn the heater buttom to make it blow cold air doesn't change and still on heat?

if youre trying to turn the heater on and cold air comes out, then its most likely the heater core


Will ac still work if you bypass the heater hoses on a 1998 ford expedition?

did the heater core start leaking? anyway you should have no problem with the air if you bypass the heater core.


Where is the heater control valve on a 1998 ford expedition with a 4.6L engine?

Heat control is by air flow control doors in the a/c and heater box. There is no water valve.


Why does your Expedition sputter only under load Air conditioner on its worse pull trailer even worse air trailer and incline wont hardly make it up?

could need a tune up.


Antifreeze smell in air vents of 1999 expedition?

heater core, tough job.take it to a qualified auto technician


With heater core being bypassed would this affect the air conditioning system of the expedition?

NO. Bypass the heater core by connecting the Inlet & Outlet hoses going to the heater core together. Do not plug either hose.


Can you turn off a cabin heater in a Chrysler voyager?

Of course, set the heater/air conditioner temperature control to cold.


Does the Cabin Filter effect the air condition?

Of course it affects the air conditioning,,,it also affects the heater. Any time u have a restricted air flow it affects how heater and air conditioning works, for the worse. Engineers have designed the heater/ac system to run on clean air, so therefore your heater/ac systems work faster and better with a clean filter. Not to mention your own physical health by breathing clean air.


Do you need to replace the heater core in your 1991 Chevy Cheyenne 4.3 L V6 if it is leaking but the heater is still blowing hot air?

replace or repair. It will only get worse.


When you turn on a heater how does it warm you?

it warms the air particles... witch then transfer the heat to you


When you turn on a heater how does the warm th get to you?

i think that the warm air push's out the cold air and than as the heat build around you. it warm you


What is the green fluid dripping from above onto my 2003 Ford expedition tailpipe?

if it has rear heat and air it has a heater coil in the back driver side check hoses to it and heater coil itself


Antifreeze leaking in center of floor on 2000 ford expedition blows hot air out f vents when ac is on?

I had the same problem on my Expedition. The heater core needed to be replaced. Cost around 700.00.


Why does the heat in your 2001 Ford Expedition blow cold air?

Low coolant? Bad thermostat? Heater core plugged, restricted or airbound? Bad heater control? Water pump not circulating coolant?


Hot air balloons have a gas heater attached to them the pilot can turn the heater on the balloon and the balloon will go high why?

Hot air balloons have a gas heater that is generally powered by propane. When the pilot turns the heater on, the balloon will fly high due to the hydrocarbon chamber that allows the pilot control of ascent and descent of the hot air balloon.


How do you fix a heater that wont blow air in a 94 Nissan Sentra?

first of all i hate to say an obvious answer but does the heater motor even turn. Does it blow air at all. The first thing i would check is if the fan motor is blowing any air at all. If not u need to put in a new heater fan motor. first of all i hate to say an obvious answer but does the heater motor even turn. Does it blow air at all. The first thing i would check is if the fan motor is blowing any air at all. If not u need to put in a new heater fan motor.


Why would your heat only work on defrost?

ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?


What would cause no heat in front but heat in back on 1997 expedition?

Diverter is improperly engaging in the dash. Turn all dash switches off. Turn on truck, turn heater switch to max heat, then turn switch to vent. Feel any heat coming from dash? Now turn fan up a notch. You may hear the diver flap engage, and air gets cooler. Got drop dash to fix it


Why would heater only blow hot air when you turn the temp switch down Replaced temp switch and still does it?

A restricted/plugged heater core can do that. Try flushing the heater core.


Why don't your heater work?

There might be a bad fuse causing the heater to not work. Check the fuses if they are all ok you may have a bad blower motor. when you turn the heater on and no air is blowing then it is your blower motor.


Does a heater in your house make your cold worse?

I don't think so because when we have a cold, it is best to keep oneself warm and thus the heater produce heat for us to keep warm. Unless we have a lousy heater which produce cold air instead of heat, haha!


Why do you smell antifreeze when you turn on the air conditioner?

You have a coolant leak somewhere in the system, possibly in the heater core.


Why would cold air blow out when you turn on the heater?

engine not warm, low coolant, or stuck thermostat