AC stops blowing cold air while driving. Works good if truck interior is cool while stopped, but as soon as I take off, it stops blowing cold air....Takes forever to cool truck after interior get hot. All pressures are correct. Does not ice up. Could this be a vacuum issue and how would one troubleshoot this? Vent controls work correctly and vacuum pump is working and will cycle no and off.
Mine blowed hot when I over charged it. It was cold at first but the next day started down the road and nothing but hot air. Got a new gauge and hose and it showed overcharged. I let some out and got it in the right area and it's been cold ever since. My gauge was bad..