That's FANTASTIC advice, Cusser; THANKS! I did drive it today, and was pleasantly surprised that it performed even better on the road in actual driving than it did in driveway tweaking! It bottomed out at 35F Vent air, on the highway, and 41F at stoplights... The air feels truly 'chilled' now, which...

I'm declaring victory! I installed a vacuum operated shutoff valve in both coolant lines to the heater core. (Motorcraft F87Z-18495-AA) The result was zero warm coolant to the heater core, except when the heater or defroster is turned on. Now I've got consistent 41F vent air, with 32F accumulator @ ...

All of these measurements were at 1,200 rpm engine speed, windows open, all vents closed except center vent. These latest were in ambient of 88F; I don't know the humidity, but, based on the condensation and frost observed, I'd say it's fairly high humidity. When I did slow the engine to idle speed ...

Thanks for the advice! First, I adjusted the pressure cycling switch 1/4 turn CCW, which improved the cycling such that it cycled between 25-40 psi, but it was still only able to produce 49 degree vent air at 25/215 psi. Next, I took another 1/2 turn CCW on the pressure switch, and this stopped all ...

I've converted an '86 Bronco to 134a by installing a new Compressor (delivered with 3 oz oil inside), all new hoses, new condenser, new accumulator, new FOT (red), new low pressure cycling switch (26psi off/47psi on), flushing&drying the evaporator, then adding 5 more oz of PAG 100 oil to the ne...