I have a 1998 windstar minivan gl and my fron air blows fine but my rear air blows hot how do i fix it my self

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There is a rear condenser in the back on the right it's bad

probably needs freon. Add a can of R134a and see if it helps. they both run off same system but rear has exapnsion valve (more sensitive to low charge) than front fixed orifice tube design.

the most common cause would be a slow leak in the system, and Freon might have been lost, causing warm air to blow Simply recharging an A/C system never fixes anything,so it needs to be checked for leaks

one of the vacumes going to the switch is bad

oxygen sensor

Look for leaks around the A/C hoses and compressor. You may just be low on Freon. When the pressure in your lines (amount of gas in your ac lines) is low, the ac will just cutout hence blowing hot air. try adding some freon.

check to see if there is enough freon in the system,if so eplace the rear expansion valve

you need to recharge the rear AC unit

the liftgate switch needs to be adjusted
or the gate its self.
ps:lift gate is the rear part of your van

G