bridged the wire on the clutch cycle switch to get the clutch to engage,that worked but the compressor is red hot to the touch after 5mins.whats my problem

 

Low refrigerant

What kind of car?

 

91 camaro rs 3.1 v6

 

Think of an AC system NOT as something that "generates coldness". Think of it rather, as a CONVEYOR BELT FOR HEAT. Its job is to MOVE heat from inside the car to outside the car. It does this by absorbing heat into the recently evaporated refrigerant in the evaporator, then raising the temperature of the refrigerant to well above outdoor ambient by compressing it, then expelling the heat in the refrigerant to the (somewhat hot outdoor) air passing through the condenser, which allows it to condense to a high pressure liquid, then passing it through a small orifice which allows it to expand and evaporate. The act of evaporating lowers the temperature of the refrigerant, allowing it absorb more heat from the cabin. The process is continuous.

The act of compressing the refrigerant raises its temperature. This alone tends to heat up the compressor. There is also friction in it, but there's not all that much of that; shouldn't contribute too much. The entire center of it is the crankcase and contains low-pressure gas; the shell holds the high-pressure gas coming out of the reed valves and can be quite a bit warmer. Might get close to 200° on a hot day.

When the system is working properly, the gas moving out of the evaporator into the compressor, should still be somewhat cool. That is, the system's ability to absorb heat should not have been completely consumed by the cabin air passing over the evaporator coil. The gas coming into the comp should still be quite cool (cool enough that the line sweats) and should thus cool the comp somewhat.

Charge the system to the correct level. Make sure it has the right amount of the right kind of oil for whatever refrigerant is in it. The comp casting might get warm but shouldn't be much hotter than hot water out of your bathtub or thereabouts. (150° or so) The shell can get quite a bit hotter. With the system properly charged the suction line should get down to 40° or so, but not below freezing; it should condense liquid water onto it but not freeze to frost. Freezing the gas line is indicative of low charge.