Automotive Air Conditioning Information Forum

Thank you again for all your help, detailed responses, and background information! It's good to know the history of things so I can better determine what is relevant and what is not, and it's especially helpful to know that the sight glass is an unreliable method of diagnosing the system in the ...

Thank you for the second reply. I was helping at a youth camp, so please don't take my delayed response as a sign of ingratitude. I am incredibly grateful you have taken so much time helping me understand the important details and overall process.

The system is working great right now, but the ...

A lot to discuss here.

Let's start with the specs for your 2002 Tundra: 22 ounces net weight of R-134a, and 7.75 fluid ounces of PAG-46 oil.

Normally, a system is evacuated with the vacuum pump connected to the yellow hose from the Manifold Gauge Set (MGS), the red hose is connected to the high ...

The way I read your post. You ended up charging the system back up without it in a vacuum? If that is the case, the system needs to be charged into a vacuum.


I apologize for the odd way I phrased my order of operations. I sucked air and oil into the system while the R/D was off and before I ...

Hi all. Brand new here and starting off with a question. Thanks in advance for your time and help!

I recently replaced the ac system in my 2002 Tundra. I had a shop evacuate the R-134a and then I replaced the compressor, condenser, expansion valve, and receiver dryer myself. When everything was ...