About 30 ounces of R-134a does seem a little light. I think it should be around 32-38 ounces based on the R-12 spec. Did you weigh-in the charge or estimate using the small cans? If the latter, it's possible that you charged more than you thought. The pressures look pretty good now. What are the ve...

Exactly. At least minimum speed. If i owned that vehicle, i'd rewire it so that the rear blower is always running at least at minimum speed whenever front AC is on. Exactly like with my front AC-only little Kei car (a relay behind the dash keeps the blower on minimum speed even if you rotate the fa...

Keep in mind that when the refrigerant is just a little low, the system might still perform satisfactorily but the compressor could be running oil starved. And HT6s are really reliant upon proper oil return rate. This gets critical if there's rear AC. Rear AC can basically turn into a refrigerant a...

About 30 ounces of R-134a does seem a little light. I think it should be around 32-38 ounces based on the R-12 spec. Did you weigh-in the charge or estimate using the small cans? If the latter, it's possible that you charged more than you thought. The pressures look pretty good now. What are the ve...

Maybe someone sealed off the lines to the rear evaporator on the Suburban? Good thought. And I would ask: Is the rear A/C working? Not blocked, his rear AC is working great. I will add that he is using the same condenser, evaporator, accumulator as I am and are compressors are very similar. His is ...

Howdy, Kind of confused at the results after helping out a friend with his suburban. Basically the high/low pressures seem to be right on, but only after adding about half of the freon capacity. Just a little background, I'm just an enthusiast with a private shop, I've fixed or replaced several AC s...