Dash AC not cold
I'm wondering if my expectations for my Dash AC are set too high. It just doesn't seem to blow very cold. When it is about 85 out it comes out about 63 out of the dash with an AC temperature gauge. I ...
Forum Discussion
rgatijnet1 wrote:
I always just used a good temperature probe in the AC duct and added refrigerant very slowly and watched the temperature. As soon as it got to the lowest temperature and started to retreat, I stopped adding refrigerant. This worked well for me with my Classic cars with Freon 12 as well as with the R-134a. Then again, I'm no expert and was only interested in cold air from my AC unit.
Agreed. Even though I had the gauges and (usually) have the graphs as well, the procedure I followed is what you state. Take your time and it works well.
Obviously, the few times when I filled the system after it's been evacuated I just fill it to the proper amount by putting the refrigerant tank on a proper scale while charging the system.
buystockinfun, as for the shut-off valves, I just put a standard hot-water shut-off valve from the hardware store on the input heater hose to the heater core.
JRscooby, you were right, the original mention of cutting off the hot water into the heater core mentioned using vise grips. I agree, probably not the best practice, especially with older hoses which might be more brittle and subject to being damaged. I was just referring to the idea of stopping the flow of hot coolant into the heater core. :)
~Rick
