[s-cars] R314a A/C - Can I charge it myself?

[Russ Panneton]

I'm interesting in checking the refrigerant charge (R134a) on my 95.5
S6, too.  I used to use a pressure gauge to measure low pressure side
pressure and add refrigerant as necessary to get the correct pressure.
 My gauge has a Shrader valve fitting -- I can't imagine Hans und Klaus
using something so standard on an Audi!  What can I expect to need to
check the A/C fill on my car?

Thanks!

Russ

Mock, Bruce J (Bruce) wrote:

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>Hey all!
>
>I'm fortunate enough to have a '93 S4 that has a  factory R134a Air conditioning system.  NOT R12 thankfully  (price of R12 is getting pretty scary)
>
>So I'm wondering...  I suspect that my car's system charge is a bit on the low side... Should be possible for me to DIY check and add some add'l R134a if it is indeed is low, correct?
>
>In the good 'ol days I used to check on an R12's charge condition by observing the rate of 'bubbles' flowing past the little sight glass on the system's receiver/dryer.  (many bubbles= low charge, very few bubbles = system charge about right)  Do these same rules apply on an R134a system?  I know I can bop down to the local Parts-Is-Us and buy a can of 134a and a hose kit - but should I even mess with it or leave it to the 'pros'?
>
>Any BTDT or opinions appreciated
>
>Thanks!
>
>Bruce - '93 with cool but could be colder A/C -  Mock
>
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