This is definitely air conditioner weather.

I had a customer in here last year with his a/c not putting out cold air.

I raised the hood, that always helps, and looked at the compression. The clutch wasn't turning.

I disconnected the switch at the low pressure cut- off valve and took a bent paperclip, in the shape of a horse shoe, or a "U" for those of you that never bought your horse any shoes.

I inserted both ends into the slots in the plug, and, wooden, the compressor clutch started turning.

I hooked the gauges to the a/c lines and opened the valves to read the pressure.

Pressure was fine.

I replaced the low pressure cut-off valve and the a/c cooled the vents inside the truck down to 39o.

The customer looked at me rather oddly and said, "I had it checked last week and they wanted $1200 to make it get cold."

I hope they were just giving him an estimate for a complete rebuild job, just in case it needed it.