My air conditioner is not working?

They say they flushed the system out, but I will take it back to them. One thing I did notice yesterday when the compressor was kicking on and off, the gauge readings went from 35 to 65+ as it would kick on and off. When it quit working, the pressure reading remained at about 65.

Thanks for your help.

I will not be able to take it back to the repair shop where I had the compressor and dryer replaced till next week. However, when I got home from work yesterday I decided I would evealuate it some more and discovered what felt like air blowing from evaporator tube where it connects at the entry to the cab. Could this leak be the possible problem?

Sorry, I know it has been a while since I have been on here. I finally took my truck back to the shop that replaced the compressor. System was full of freon and everything checked out except that non of the switches (high or low pressure) are getting any power to the them. The mechanic told me that it could be the circuit board in the dash. He is supposed to find a wiring diagram so tha we can check it out. O you have any ideas of what it could be? Thanks!

Thank you so much, will check out this weekend.

I have replaced the HVAC control assembly 4 times, when I turn on the a/c switch the assembly shorts out. Only blows on the floor and the temperature control works. No a/c, cabin circulation or directional control. I have replaced compressor, blend motor, blower, blower relay, heater resistor, relay under the hood. Any suggestions?
Respectfully,
A.B.

When I push the a/c button on the hvac control assembly stops working for a/c, cabin air button and direction control knob. There is an electrical burnt smell and the transistor under the directional control knob on the board is burnt. Respectfully

When I hook up the gauges low was 95 and high was 75. I jumped the compressor to the battery, engaged the compressor, and the low went to 30 and high went to 150. So, I started checking the electrical. The relay does not engage. So, I jumped 87 to 30 connector and the compressor engaged. So, I checked 86 and 85 connectors no power on either. I jumped the pressure switch on the accumulator and nothing. So, I tried to jump the other switch on high side of the compressor still no luck. I cannot find a electrical diagram (even in the Haynes book). Oh, I checked all fuses as well. Help, what powers the relay to close? Does the pressure seem right. The low is double when the compressor is not on and then balances out correctly when the compressor is running?

Thank you for the diagram. I will check them. Does the system pressures usually works this way?

Thanks, for the wiring diagram. Found the issue the clutch cycling switch was out I changed it and BAM! All fixed.

Thanks, for everything this site rocks water back

I had the same problem. Just and added a little Freon and the system works perfect thanks you guys!

I purchased this truck about a week ago. The A/C does work only when the relay is jumped using a jumper wire. The low pressure switch is not getting power to it at all unless the relay is jumped. I tested relay for A/C. It has proper resistance. I swapped relays with one like it in the fuse box under hood. Still not working. Fuse is good, compressor works when relay is jumped or when using a power probe. What do you think the problem may be?

Would the ignition 10 amp fuse gave power with key on or does engine need to be started?