Checked the fuse and the relay, all good. Still have no ac and the Freon pressure at 150psi with the clutch off.
It doesn't use Freon, it uses R134A. It leaked out the R134A and shut the system down. Find the leak, fix the leak, then recharge with R134A. You can't buy Freon if you don't have an EPA license.
Thats pretty high if the system is not running. Average pressure on the low and high side should be near outside air temp.
Normal low side is 30-40 psi and high side is 200-250 psi when the system is running and the freon charge is full.
SOURCE: I have a 2006 ford fusion. The ac compressor will
It's the evaporator temperature switch, ford has tsb's out for it. You have to remove the dash board to change it, so far I've done 4 this year and it's only June. FYI it's 1.1 lbs of freon...........
SOURCE: 2006 ford fusion ac problem
As a Ford dealer tech I found this was always caused by the AC compressor cycling switch, it shuts the compressor off when it reaches about 30 PSI, this prevents freeze up and saves fuel, when the system press rises again to about 42 PSI it turns the compressor back on and so on, change the switch, it is located in the low pressure line from the compressor, that is the one that gets cold.
SOURCE: 2000 Ford Taurus AC compressor not working;
if compressor clutch dont kick in .it has a open in clutch coil.
SOURCE: Air conditioning relay switch - 2001 Ford Tauras
there is usually a relay block (black in color) either on the right or left side under the hood, and in front of the wheel well. Don't discount the possibility that you may have a bad pressure switch on the line. That is a safety device that is now installed on most all vehicles. If you turn on your defrost, you should hear the clutch on your AC clicking on and off. If you do, there is another issue. If you don't, then listen for a faint clicking. This is a small relay so it maybe very hard to hear, even if you found it. You many actually have to lightly put a finger on the relay cube to see if you can feel it clicking. If this is clicking, but the AC is not kicking in and out, replace the relay. If this is NOT clicking with the defrost on, then it is not being told that it is ok to. This may be the pressure switch that drops out if the freon is too low, or too high.
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