I was concerned about the heater core issue, running on vent the air doesn't get heated, though bypassing it could make certain. Charging was done at 95* with a box fan blowing on the front of the truck.

I have a 1991 Ford F-150 lariat, with the 4.9l inline six and automatic transmission. I bought the truck not running and have been getting it back in good order. The HVAC system is giving me fits and I need advice. I had originally replaced the compressor with a remanufactured one, new dryer and red...