My A/c is not cooling properly. It's blowing cool air not cold air. I hooked a set of gauges up and the high side was reading 300 and low side was reading 60 to 65. Compressor seems to be working right. The max A/c seems to be working right. I washed out the condenser nothing changed. Idle
Seems to cool better than going down the road. Any ideas?

 

Those pressures might be perfectly normal... or they may not be. You didn't tell us about the ambient conditions and whether or not you performed the pre-check setup steps.

That would be VERY unusual.

 

mine worked better when idling and worse when driving one time. the clutch in the compressor was locked up not allowing it to turn off/cycle.

 

It was 98 degrees . I checked it during my lunch break. I only get 30 min. So hooking up the gauges and doing a quick look over/ops check is all I could do. What other info would you like and I'll get it for you when I can.