Big deviation in exterior ambient temp display vs actual temp (25+ degrees!)
05-27-2018, 06:30 PM
#11
AudiWorld Super User
Don’t use this method unless you want to risk damaging your AC system and spending $$$$ because you overfilled it. It’s a variable capacity compressor so it’s impossible to tell what it’s doing, or the fill level just by looking at pressure gauges. Assuming it has no leaks and the rest of the system is working normally, the only way to fix it is to take it to a shop with an AC recharge machine that evacuates and then fills it with the exact amount of R134 by weight. Any other diy method just doesn’t work. Even Louis our resident skeptic will reluctantly concede on this one.
05-29-2018, 11:11 PM
#12
AudiWorld Super User
"Yes Dave", if the system is totally evacuated, ie, no pressure, no air, no water, 620g +/-20g ~ 2x12oz cans - will sure make the system runs ice cold, my wife had to deflect the ice cold vents toward me since I'm hot blooded in 95F ambient.
I have to lose with the system only runs with exact weight of Freon, only Audi A8. And where do they only charge $80, MP4? Try $100-$120.
Hook up and evacuate already $50.
I'm buying an evacuation machine since I know exactly how it works now.
Btw, it took 5 minutes to clear all the hot air inside the cabin when parked in 95F heat.
Cheers,
Louis
I have to lose with the system only runs with exact weight of Freon, only Audi A8. And where do they only charge $80, MP4? Try $100-$120.
Hook up and evacuate already $50.
I'm buying an evacuation machine since I know exactly how it works now.
Btw, it took 5 minutes to clear all the hot air inside the cabin when parked in 95F heat.
Cheers,
Louis
Last edited by ltooz_a6_a8_q7; 05-29-2018 at 11:16 PM.
05-30-2018, 08:34 AM
#13
The Transporter
Thread Starter
Agreed - where is the $80 treatment? A chain that might be here in the St. Louis area? That's a good price.
Thanks for the advice guys. I will have the pros do the evacuate and refill.
Thanks for the advice guys. I will have the pros do the evacuate and refill.
05-30-2018, 02:34 PM
#14
AudiWorld Senior Member
Gauge pressure
I need to ask my guy how much to pull down and refill.
05-31-2018, 07:11 PM
#17
AudiWorld Super User
Originally Posted by a_very_naudi_guy
National Tire & battery wants $178 to do it. Where was the $80 service?
Cheers,
Louis
05-31-2018, 07:53 PM
#18
AudiWorld Super User
You realize venting R134a to atmosphere from an auto a/c system is technically illegal, right? So unless you are going to pump into a capture device... ? The can type DIY stuff assumes a depleted or repaired system, but not the do it by weight method for Audis that requires the system purge to get the total weight after the service. No, the ozone police don't get out to the home garages, but certainly checked at shops. Not as harmful as R12 was, but by no means inert or close to it.
Last edited by MP4.2+6.0; 05-31-2018 at 07:55 PM.