Air conditioning issues

5.0 V10 50v biturbo - 571 bhp
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Doug_RS6
3rd Gear
Posts: 288
Joined: Fri Sep 07, 2018 12:01 pm

Air conditioning issues

Post by Doug_RS6 » Mon Jul 25, 2022 9:13 pm

So my air con doesn't seem to work. I had it regassed about 4 weeks ago and it was apparently totally empty. It then worked for 2 days ish. Now its blowing ambient temp again.

If it was leaking then surely it would have shown up when they regassed it?

welwynnick
4th Gear
Posts: 522
Joined: Fri May 25, 2018 4:53 pm

Re: Air conditioning issues

Post by welwynnick » Tue Jul 26, 2022 10:22 am

When AC is re-gassed they usually evacuate the system to remove water vapour and hold a vacuum to check for leaks, so a leak should have shown up. Perhaps they just didn't wait very long?

AC leaks are often caused by stone damage on exposed parts of an old and corroded condenser, or old / perished / cracked O-ring seals at various points (especially near exhaust).

Nick

Charmie86
Neutral
Posts: 12
Joined: Tue Dec 29, 2020 6:38 pm

Re: Air conditioning issues

Post by Charmie86 » Tue Jul 26, 2022 2:20 pm

is the light on the econ button lit red and when you press the button it will not go out your aircon will be empty, if it isnt lit red it prob be the pressure switch faulty which was the case with mine. i changed my pressure switch but unfortunatly the valve under the switch was fault and let all the gas out. which in turn put the red light on.

Doug_RS6
3rd Gear
Posts: 288
Joined: Fri Sep 07, 2018 12:01 pm

Re: Air conditioning issues

Post by Doug_RS6 » Wed Jul 27, 2022 8:21 pm

It goes out when pressing the Econ button. It was under vacuum for a good 30 mins I'd say. Is the pressure switch generic to all A6 of this age?

Jim Haseltine
4th Gear
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Joined: Mon Jan 04, 2016 2:26 pm

Re: Air conditioning issues

Post by Jim Haseltine » Wed Jul 27, 2022 9:57 pm

Generic to all sorts of VAG cars from about 2005 onwards. Dunno how much Audi charge but you can pick up a decent aftermarket switch for less than £40

Doug_RS6
3rd Gear
Posts: 288
Joined: Fri Sep 07, 2018 12:01 pm

Re: Air conditioning issues

Post by Doug_RS6 » Thu Jul 28, 2022 10:29 am

Thanks, I've ordered one online. Unfortunately looks like a bumper off job and I really hate getting those two side nuts back on.

Doug_RS6
3rd Gear
Posts: 288
Joined: Fri Sep 07, 2018 12:01 pm

Re: Air conditioning issues

Post by Doug_RS6 » Sat Jul 30, 2022 7:44 pm

Does anyone know if parts 4F0959126A and 4H0959126A are interchangeable?

Jim Haseltine
4th Gear
Posts: 734
Joined: Mon Jan 04, 2016 2:26 pm

Re: Air conditioning issues

Post by Jim Haseltine » Sat Jul 30, 2022 10:11 pm

According to AutoDoc cross-referencing yes they are.

Doug_RS6
3rd Gear
Posts: 288
Joined: Fri Sep 07, 2018 12:01 pm

Re: Air conditioning issues

Post by Doug_RS6 » Tue Aug 02, 2022 5:39 pm

Thank you

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