Arbitris

my 2000 A8 has had a few new AC parts put on and I picked up a R134A kit including low side pressure adapter, however the adapter doesn't fit. Searching for them for sale as well as searching forums for people that have hit the same wall haven't provided me with any information I can use.

Is there an adapter I can actually purchase that will fit the low side nozzle? (again I have a quick disconnect adapter specifically to retrofit from R12 and it doesn't match the Audi's threads)

This is a low budget car/project, and I don't want to spend a ton of money on factory service, or expensive parts.

silverd2

Yes you need a "tank adapter" ...it screws onto your lower pressure valve >>>

http://www.ebay.com/itm/FJC-6016-R13..._Tools&vxp=mtr

Read here >>


http://forums.quattroworld.com/a8/msgs/15213.phtml

AND (IMPORTANT!!) >>>

http://forums.quattroworld.com/a8/msgs/69707.phtml

Arbitris

Thanks for the response. That's exactly what I was asking for.

I bought a package that included R134A, guage, and the tank adapter stating it was universal to fit all cars. The adapter doesn't fit.

Arbitris

(Looks like the same adapter on the ebay page but it doesn't state what thread pitch it is)

audinutt

The ones sold at the local auto parts places don't thread on, you MUST order the proper tank adapter, not the conversion adapter.

-Richard

silverd2

The link I posted is the one I bought, from that same supplier. R134a fittings are "supposed" to be universal. This one screws right on to my 2001 A8 low pressure valve...and my 1990 Passat converted R134a fitting.

I've found that most of these adapters, unless "customized", require pushing on the fitting a little while filling, to fully open the valve...but otherwise, no problem with mine.

Arbitris

Just in case someone stumbles across this in the future, the item in the link above is:

Brand: FJC
Part Number: 6016
Description: R134a Tank Adapter

I called a local auto parts store and gave them this information (I like giving my money to brick and mortar stores instead of sending it directly overseas). They said they can have another brand equivalent at the store from a couple towns over within a couple hours. And they did.

The part screwed right on, but wouldn't trigger the car's nozzle. Closer inspection showed it wasn't reaching because of a HUGE rubber bushing, so I took it out and used teflon on the threads to seal it up and it worked fine.

My car only took a couple ounces to go from 0 psi to 35psi and I don't think that should be accurate, so I'm going to check other things first.

(Also while running there is a really dry sound almost like an open air intake, but probably bad bearings somewhere coming from the front of the engine compartment and I'm hoping my ac compressor is ok)

Arbitris

Again, Thanks for the help!

audinutt

your system should have close to 100psi when the compressor is NOT running on the low side.
Now with the engine running 35-40 is about right as I recall for the low side.

The high side should be near 250-300 when charged adequately and the system is running and has been for a few minutes.


When the compressor is NOT on, the system equalized out and you should have about 90-100psi on the low and high side.

-Richard

Arbitris

It is ambiant temperature specific, and with the temp outside it was supposed to be 25-35psi.

It didn't actually blow cold. I have found a couple unplugged connectons when I was wiring up new headlights, and I haven't tracked them down yet. I meant to check, but I forgot to look to see if the compressor clutch was engaging.