First while the engine is running, look under the hood and see if the air conditioner compressor is turning. If it is not then using gauges hook them up and see if the system has pressure. If both gauges show 80 psi or more then you have an electrical problem somewhere in the system. Check fuses and connections. Hook up a 12volt feed wire to the positive feed connector on the compressor( green wire). If it starts running then check the electrical system. If there is no pressure or very little then there is not enough pressure to override the low pressure switch. Carefully add a lb of 134a freon to the system and see what happens.
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First while the engine is running, look under the hood and see if the air conditioner compressor is turning. If it is not then using gauges hook them up and see if the system has pressure. If both gauges show 80 psi or more then you have an electrical problem somewhere in the system. Check fuses and connections. Hook up a 12volt feed wire to the positive feed connector on the compressor( green wire). If it starts running then check the electrical system.
If there is no pressure or very little then there is not enough pressure to override the low pressure switch. Carefully add a lb of 134a freon to the system and see what happens.