My A/C has been acting up lately it will work for about 1 - 1.5 hours and then stop blowing cold air. If i stop and shut the truck off for a minute and then start it up the air will work for about 1 - 1.5 hours. Also while the A/C is working if i turn it off then on again it stops blowing cold air and i have to stop and restart the truck to get it working. I did have the system recharged about 1.5 months ago and seemed to work good afterwords until this problem started about 2 weeks ago. Anyone have any ideas before i take it to the shop?

Possible Revolution sensor.

Low pressure cycling switch needs to be replaced. It is located on the accumulator by the firewall.