95 caddy AC switch wont engage??

You say refrigerant is "full", but it can have too much. If you have attempted to "top off" your refrigerant then you may have too much, keeping the compressor from engaging. If you haven't messed with it and the compressor just stopped engaging on it's own then I would start checking the relay, fuse and the ac switch.

You may be having AC problems but that is not what happened when the Steering locked unless the AC is on the same belt as the Power steering unit. That whining you are hearing when you turn is actually the power steering unit being low on fluid or the power steering pump going out. Based on what you have described my guess is that the unit has gone out and needs to be replaced. As far as the AC compressor is concerned, if the unit is low on Freon it will not engage once it gets too low unless the clutch goes out. When you look at the center of the AC compressor when the engine is running and the AC is off you should see the pulley free spinning and the very center of the pulley won't be spinning, that is the clutch Dis-engaged. When you turn the AC on the Clutch should engage and allow the compressor to work. You will hear it kick in and kick out repeatedly if it is low on Freon. If it is too low it will never kick in because the low pressure switch won't allow it.

this could be many different problems:
1 could be out of freon.
2 clutch not engaging. (see if a/c compressor kicks in)
3 switch on inside not working. no power going to a/c compressor.
4 bad fuse or relay..

need more info. to really be able to help.... hope this helps....

Could be one of two things Dean.
1- The transmission motor could need to be readjusted , and that is easy and always first choice. Under the car look at the transmission on the right hand side you will see a small motor with 3 bolts , loosen the bolts but do not remove , then open the ignition , do not start the car. ignition off and then tighten the bolts. Start the car and check it out. If still the same ... 2- Most probably you have a problem with the clutch and needs to be replaced.
Good luck

try using your spare key might be the anti theft sys kicking in

how do i install a new ignition switch on my 95 chrys conc

try to jump the low pressure switch, and monitoryour pressures with a gauge, if everything looks normal, try a new switch

The compressor is shot.

Make sure it is getting fuel check the fuel pump and filter

Hi
Check for bad connection at heater resistor or try tapping heater motor lightly
with ignition switch on and heater switch on. Could be heater switch connection.