So after clearing the DTC in the Hvac nothing came back?? You posted up the screenshots but what about any codes in Hvac.
Remember that you never did get the correct amount of refrigerant in to the system, you need to take care of that.
Awesome! It paid finally were you able to put 525g?
I am wondering if your original issue was a low charge in system but not low enough to cause the G65 to complain(<2.0bar). When you evacuated the system for the first time what was the weight that was removed? We know the second time you did it the system had about what you put in 140g.
First off, I know it's been awhile, but belated congrats for fixing your ac problem! I wanted to thank you (and everyone else) for all this effort and info! I too have a 2007 GTI and been without ac for almost 3 years, thought I'd share the gist..I FRIGGIN DID IT!!!! Goodbye 4 years of Texas summer heat with a window for A/C! Hello icey frost pouring from my vents!
So, to summarize what has gotten me here:
Looked back over all of my findings so far. Figured that at this point, there were only two things that could have failed. 1) The solenoid. I saw a video where high pressure on low side, and cooling slowly dying off are tip offs to this one. 2) The compressor. Less likely, seeing as to there were no fault codes found for the a/c system. So I poked around some more, and found that Amazon had the solenoid for ~$20. I figured it would not be too difficult to replace.
Set aside a few hours, and got to work. Had the system evacuated, and jacked it up. Removed the c-clip holding it in and realized mistake #1. Fans are in the way. Removed the fans, and popped the solenoid back in. I figured I need to replace the fans anyway, so I better figure out how to do it. Had my buddy assist with the refill, to make sure the weight was right. Used up the rest of the can I started last time, 150g in. It did not seem to fill too quick with the car off, but I did not want to run it dry. Cracked the second can and started the engine up. Started pulling off of the second bottle. Watched the gauges and the high side pressure started creeping up. Checked the vents, and sure enough, icey cold. I'm not gonna lie, I am a grown ass man. But I screamed like a newborn baby with joy. Finally, no more sweating for 45 minutes home every day. Thank you all for the guidance and patience, I greatly appreciate every minute you guys spent walking me through things.
Moral of the story: If you have no cool air, check your scan log. If no codes, check pressures. If you have even pressures on both sides, and the low side is higher than what it should be, spend the $20 to get a new solenoid and try it out. It's super simple and could save you quite a few bucks. Shop quoted me $1200 for a new compressor.