Actually, the most common problem with the A/C unit is a cold solder joint on one or more pins of the relay located in the Constant Control Relay Module (CCRM). The CCRM is located under the hood near the front of the driver's side wheel well. This part is known to have faulty solder joints to some of the relays (cold solder joints) which prevents the relays from functioning properly.
There are writeups on how to repair it on Ford Escort Owner's web site. It requires removal of the relay unit, drilling out 4 rivets to gain access to the electronics, then a few more minutes with a soldering iron. Seal it back up using rivets or a hot glue gun and off you go.
The most common problem in those situations is either low Freon (ac gas 134 in a 95 Ford) or there is high & low pressure along the AC lines which signal the compressor when to activate on/off. Of course there is the basic electrical system from fuses & relays & this case you have n AC switch which needs to be checked to see if the comp is receiving electrical signal when on. Start with jumping the low PSI switch on low PSI line. If it activates the comp, that usually calls for Freon. Gauges req. Turn the ac on & off, listen for a click at the fuse/relay box. No click/ bad relay. GOOD LUCK, FRANK M (its complex, be careful)
First you should know that there is an electromagnetic clutch on the compressor and it is going to appear to be free turning unless there is power to it. Second is a switch that is in line with the power to the clutch and that switch opens and wont let power to the clutch if the Freon is low. Third is the fuse that you may be able to find a diagram for at autozone dot come. Make a free account and then login and put in the year make and model and go browse the free repair guides.
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