Car: 2015 Gen 3 The AC blows but I don't feel its cold enough. Of course, here in SoCal it is still winter and its chilly outside so the slight cold air may be due to the outside temp of 61F. I started the diag process and checked the AC fuse under the dash and it was fine, next i took the airbox out and noticed the plug to the AC compressor had come off so I thought that was my issue so, I cleaned up the male/female ends with electronic parts cleaner and added a bit of dielectric grease (just a pin size in each pin) and replugged it and still no change. I then connected my “basic” AC gauge that comes with the AC Pro can and it read low, so I added a bit just to see if any change was made and nothing. I also checked the peephole on the hose and nothing was moving inside (not sure if I am suppose to see freon moving), lastly, I checked my cabin air filter and it was super dirty and appeared clogged from debris, I removed it just to let the free air flow to see of that helped and nothing. Anyone ever experience this? If so, have I missed something or any ideas what to look at next? I do have the AC Gauge manifold to dive into it further but wanted to checl with just basic tools at the moment to see if I could find the issue. Also, there are no codes.
You should see bubbles in that peep hole, unless the system is overfilled. Have someone else start the car and set temp. to Lo, fan on high; activate AC button. You should see a spurt of bubbles. Both radiator fans should start spinning. Hope this helps
I hooked up my Icon T10 scanner and noticed there was a special function called “ AC System Relearn/Initialization” then “ Servo Motor Initialization” then a message saying “Use this function when the servomotor or the AC ECU is replaced or the battery disconnected (12 battery indeed replaced 50 miles ago). Then “This function is used to servomotor initialization of AC”. I proceeded and then heard a loud buzz coming from the front and noticed the AC compressor was now working and a “clear” liquid flowing thru the peep glass BUT AC was not cold still. I hooked up my basic gauge and it read LOW. I also noticed that when in the car, I would turn AC off and would hear the compressed air hiss that you get when shutting off the AC. On my 08, the AC compressor running just sounds like an electrical humming but not a loud buzz like this. I am not sure if this is normal but I will post a video of this soon. I hope its not an indication that the compressor is toast although it appears to be running.
Here is the video to the loud buzzing sound coming from the AC compressor. Not sure if these 3rd gens are suppose to be this loud. And I do not recall my fans coming on while AC is on. https://youtube.com/shorts/U_jBhTPG_4Y?si=4cdlunXaX9UI4WNY
Yeah that's no good. So when this starts to happen or when you activate the compressor do you see the low side gauge get sucked down from the lo gauge buried .? Should come down to near 40 PSI?
