Hey Scotty, I recently watched a video you made about diagnosing A/C problems using a set of gages. Trouble is, you covered every situation but the one I'm experiencing. I have a 2007 Nissan Murano, 187,000 miles, runs great but my a/c is responding in a weird way. The issue I have is that when the pressures indicate that the system is full of freon (40-50 psi), hot air is blowing through the vents. I have to bleed the system until it reads way below normal pressure (around 10 psi) before it starts blowing cold air. I also bought one of the freon kits from the parts store with the gage supplied and got the same results. Before I replace the compressor, I wanted to ask if there is any other component in the a/c system that would cause this. Searched the web and YouTube exhaustively but have not had anyone describe this situation. Thanks for your time.
The issue I have is that when the pressures indicate that the system is full of freon (40-50 psi),
That doesn't mean the system is full, particularly if you have a variable-displacement compressor which most vehicles have been equipped with for over 20 years. What is the high side pressure?
I also bought one of the freon kits from the parts store with the gage supplied and got the same results.
If you're talking about one of those so-called "recharge cans" they are useless for doing any meaningful diagnostics.
Have you checked operation of your temperature blend door? Checked temperature of condenser, evaporator (if accessible), and hoses?
