Problems with A/C

You need to add a little more 134 to get the low side to stabilize around 30. 200 at idle on a hot FL day is nothing. When I service my 93 van I converted, I run at Max AC, high fan, and slowly add until suction low side line gets cold. If you add to much, cooling performance will stop and high side will rise really fast. Mopar also uses a temp probe in the evaporator to cycle the compressor, you can pull it out a little to fine tune the cycling. Temp probe works with cold /warm temp selector.