I have noticed recently that after driving my truck for even a short while it drops a lot of water from the A/C. I'm not talking the typical pint or so that I normally see here in Houston. I'm seeing a quart or so pouring out. Not a problem until i drove the truck on a warm day with the A/C on for about an hour. I then begin to notice the air flow from the vents had dropped off quiet a bit. It seems like this thing is freezing up resulting in blocked air flow. The extra water is this big block of frost melting when I park.

Any ideas?

By the way I had the heater core replaced about 6 months ago.

 

there's a switch or pressure sensor that is supposed to cycle the compressor on and off. On a past car I had, this failed, and the compressor kept the heat exchange process going until the heat exchanger froze. Ice won't let air flow through.

Just a thought.

 

Find somebody or if you have a AC manifold/gauge set,
check the performance of your system..

An example:

80 degrees outside temp..

Low pressure side should be within 22-45 psi

High pressure side should be within 125-230 psi

Take this info for 80 degree weather only....
Outside temperature has a big say so in the high side pressures.


If it is in this range, then your evaporator core is probably plugged with dirt, etc.

Good Luck and keep me posted!!

FordMasterTech

 

very possibly just a little low on freon,