[Manny_boy]

Jumping your compressor leads might not do it, because it has to create an elctromagnetic field to close the clutch plate. A better test would be to find the AC relay, and place a jumper between terminals 30 and 87. That will tell you if your compressor is operating.

Second, there is a low pressure switch located on or near your accumulator, if your pressure is low, your compressor will not engage when you turn your A/C on if the switch is operating properly. I believe the switch has three leads. One is ground, one is a 5v signal reference for your ECM, the other tells your ecm whether or not your pressure is sufficient (IIRC).

as far as your fans - I'm assuming that you have 2 - one of the fans only comes on when either: you engage the A/C, or you reach the upper threshold of the temp range (and at that point, the first fan should have been running)

You mentioned that you changed your thermostat, radiator and hoses. Make sure you bleed all of the air out of your system. Air pockets seems to play havoc with our cars as far as operating temps.

Also there is a temperature sensor screwed into or near the rear head. This is the sensor that the ECM relys on for coolant temp. There is also a separate, single wire temp sensor that is used for what the gauge reads. If your temp sensor is bad, it could give the ECM false readings, that could cause problems. (That usually causes other drivability symptoms though, has your car been running rich?)