Quote:
Originally Posted by Sylvester
Thanks for the reply, thats what i thought, question? on a 100 degree day i check the low side with my gauges its reading 45 psi, should add more freon? if so whats the max psi low side on a 100 degree day without over charging.
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It’s nigh impossible for a simple pressure test to show anything meaningful.
You need both pressure and temperature readings on high and low side lines, the motor needs to be above 1500RPM, and the system needs to be on high cool, with windows open, and a large fan blowing in front of the car…
45psi sounds full, but if at idle rpm, could be totally low.
A lot needs to be happening to get good refrigerant numbers…