99 ford expedition Eddie Bauer. 5.4 liter. Antifreeze spraying from underneath somewhere?? Isn't overheating but blows cold air out vents if there's no coolant in the reservoir. No leaking or puddles noticeable from underneath/outside. Don't have the money to play guessing games,but I'm definitely confused as to what the problem could be.also no smoke coming out the tailpipe,and its freezing here, so that's beyond strange.

Question edited for clarity.
Question moved to model category.

Rear AC Issues

https://www.google.com/search?q=1997+Ford+Expedition+Eddie+Bauer+Edition.+The+rear+air+conditioning

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It's on the side of the transmission under the drivers door. The shift cable runs to the control arm it is under.

If this means that you have no rear air at all, the problem is a cheap resistor that you can replace. Ask a parts house to find the part and show you where it is located. You can do it and it's a cheap, easy fix. If some air is blowing out of other rear vents, then the problem may be a fan and not just the resistor. Air can be blowing out of the front vents like crazy and the problem with the back can be as I described sense front and back have separate resistors.

Mixing Door

check your coolant level

more than likely your blend door or actuator is bad to replace blend door is a large job dash has to come out

Due to hazmat regulations the best answer is to have it flushed at a quick lube shop they are the most qualified to handle the waste generated in this process.

If you are going to do it your self ensure motor is cool additionally that your never allow antifreeze to stand out alone it is very toxic.

Don't flush. Drain and refill only and take your old antifreeze to your local hazwaste center for disposal.

Hope this tip helps.

r/
David

the heater is a long plastic box and the mixer door is inside of the box. The stepping motor controls the door.

Check the fuses for the blower motor and check power to the front switch to the blower.

you may just be low on freon. The rear will often work ok when low, but the front won't

The same compressor serves both front and rear systems. Check that first.

ALso, check to see if your front blend door rotates when you raise & lower the temperature.

report back on results