Need AC help in Louisiana

Sounds like a problem with the high-side pressure sensor (don't know the actual Ford terminology)


Unplug it, jump it and if the compressor kicks on i'd suspect that

there are three problematic areas there.

1. Low pressure cycling switch, located by the drier on the passenger-side firewall. Unplug the connector and use a wire to jumper the two wires. If the compressor runs, replace the cycling switch. If that doesn't help,...

2. high-pressure switch, which is up near the radiator on the passenger side, just look for the high-pressure (bare metal) freon line. There are four pins, so you need a haynes or chilton book to tell you which two are the high-pressure cutout switch and which two are the A/C control to the radiator cooling fan. Jumper the cutout and if things work well, you are done. If that doesn't help...

3. The CCRM in the passenger wheel well (front) has the A/C relay in it (it has to be replaced as a complete assembly). If the contacts burn it can make intermittent or no contact and the compressor won't run. Most likely cause is #1 above. Second is #2.

All of this assumes that the freon charge is actually correct and the pressure is not too low due to a low charge level, and not too high due to an overcharge condition. Either will make the thing shut off...