Recent content by ggff002

According to the R134A chart, at ~95 ambient temperature, high should be 275-300 https://www.acprocold.com/help-and-advice/system-pressure-chart/

Yes, this is correct.

I tried with different manifold gauge - this time it seemed to work properly - pressure was changing. The car is Honda Pilot 2007. Original AC system. It was re-charged 6-7 years ago, in a shop. At around 95 ambient temperature, low side was around 40 and high was below 250. I added, maybe half...

55 degrees when outside was 90 or so and very high humidity. With the hoses connected to the car - no, I did not open the valves on the manifold.

Thank you for all the responses! I wanted to check pressure on low and high side, to see if it is within spec. The car AC works, but the temperature is somewhere around 55 degrees (measured in the center vent, after 10 minutes with the engine at ~2000 rpms). If you look up that Mastercool kit...

Hi, First time tried to use AC manifold gauge, to check the low and high pressure in my car (R134A). Used Mastercool 89661. With the valves on the manifold completely closed, I connected the low and high pressure hoses to the car. Car engine was off. Yellow hose not connected to the manifold at...