Today I replaced the expansion valve and receiver/drier. The ac expansion block was the only area showing significant signs of the dye, so I hope the r12 stays in the system. I did recover the remaining r12, which was really only enough to slightly cool the car at night. Using the vacuum pump we pulled a vacuum of 30 for an hour then filled up the system.
Next tasks for my car: - replace brake master cylinder - install track pads and new front rotors - headliner replacement - fix power locks - none are working Larry, whats on your list? :) On Sun, Jun 17, 2012 at 12:04 AM, Les Noriel <[email protected]> wrote: > I too am doing this on my Corrado. I am replacing the expansion valve and > all of the green O=rings as well as the reciever dryer. All of these > obtainable and inexpensive from partsgeek. I decided to also replace the > high pressure switch. All of these arrived yesterday along with my vacuum > pump > > Les > On Jun 16, 2012 7:44 PM, "Galen Bergthold" <[email protected]> wrote: > > > That should be the AC expansion valve block. The 4 AC o-rings on this are > > replaceable. Might also consider a new Receiver/Drier if refilling the AC > > system. > > GB > > > > > Date: Sat, 16 Jun 2012 22:04:14 -0400 > > > From: [email protected] > > > To: [email protected]; [email protected] > > > Subject: Re: [a2-16v-list] Rebuilt ac compressor > > > > > > I injected some dye and oil a couple weeks ago. The compressor has a > > very > > > slight amount of dye coming from a spot toward the pulley, but it > doesn't > > > appear to be leaking where I suspected. However, the system does have > a > > > pretty good leak coming from the connection block near the firewall > > > passenger side. 3 of the 4 connections had strong signs of dye. Are > > those > > > 4 connections just sealed with o-rings? > > > > > > On Thursday, May 24, 2012, Chad Rebuck wrote: > > > > > > > Thanks for the discussion guys. > > > > > > > > I know the compressor functions perfectly I just suspect it is > leaking > > > > around the shaft. I'll inject some dye along with the r12 freon this > > > > weekend and see if I can confirm the leaks. My dad purchased a r12 > > tank a > > > > long time ago and my 90 gli is the only car still on r12. We do > have a > > > > vacuum pump too since we do work on ac systems now and then. > > > > > > > > I was really not looking forward to removing everything needed to > reach > > > > the evaporator and expansion valve connections to replace o-rings :( > > maybe > > > > it is easier than I'm thinking. I can't remember if I've ever had > the > > > > heater/ac coil box out of this car before. > > > > > > > > On Thu, May 24, 2012 at 11:34 AM, Matthew Yip <[email protected]> > wrote: > > > > > > > > Compressors rarely fail - think of them like a coil, either they work > > or > > > > they don't. Some of the newer compressor have dainty electrical > > connectors > > > > that render them useless (which is both expensive and frustrating) > but > > > > that's another matter. > > > > > > > > > > > > One of my buddies purchased a Harbor Freight vacuum pump to perform > a/c > > > > work. I haven't used it yet but from what I'm told, it really > sucks... > > > > > > > > > > > > > > > > > > > > >________________________________ > > > > > From: Charlie Russo <[email protected]> > > > > >To: Volkswagen a2 16v discussion list <[email protected]> > > > > >Sent: Thursday, May 24, 2012 8:07 AM > > > > >Subject: Re: [a2-16v-list] Rebuilt ac compressor > > > > > > > > > >I agree with others here. Unless you have CONCRETE, ABSOLUTE, proof > > that > > > > the > > > > >compressor is the source of your problem, checking the ENTIRE system > > for > > > > >leaks is the way to proceed. > > > > >Also agree with Matthew that should a compressor purchase be > necessary > > > > stay > > > > >away from auction sites & craigslist for this part unless you like > > > > gambling > > > > >that the used/rebuilt part will actually work. > > > > > > > > > >The A/C system in my 1985 Golf Daily Driver leaks some. (original > > > > compressor > > > > >BTW). When it gets to the point where it does not cool as well I > just > > add > > > > >some freon once a year or so. Just not enough time to trouble shoot > > and > > > > find > > > > >the source of the leak. > > > > > > > > > > > > > > > > > > > >-----Original Message----- > > > > >From: Matthew Yip > > > > >Sent: Wednesday, May 23, 2012 10:54 PM > > > > >To: Volkswagen a2 16v discussion list > > > > >Subject: Re: [a2-16v-list] Rebuilt ac compressor > > > > > > > > > >I wouldn't buy a rebuilt compressor from Fleabay - too many risks > that > > > > >you'll end up with a lump of aluminum. That said, buying from > > Rockauto or > > > > >similar would be a safer bet if you want to buy on-line. > > > > > > > > > >As for your leak - most likely it's a dry o-ring. You could > probably > > just > > > > >pull the lines and replace all the o-rings. Then evacuate the > system > > and > > > > >refill it with a sealer and an oil charge. > > > > > > > > > > > > > > > > > > > >>________________________________ > > > > >> From: Jack Simon <[email protected]> > > > > >>To: Volkswagen a2 16v discussion list <[email protected] > > > > > > >>Sent: Wednesday, May 23, 2012 7:17 PM > > > > >>Subject: Re: [a2-16v-list] Rebuilt ac compressor > > > > >> > > > > >>Don't just look at the compressor, have it professionally leak > > checked > > > > with > > > > >>a dye injected into the system, there are a ton of places it could > be > > > > >>leaking, all of which are expensive to repair. Mine still leaks > but > > > > being > > > > >>in south central PA, it isn't that critical to me, being near St. > > Pete > > > > >>makes a helluva difference!! > > > > >> > > > > >>On 23 May 2012, at 18:34, Chad wrote: > > > > >> > > > > >>I may have a leaking compressor on my 90 16v. What experiece do > you > > > > >>guys have with rebuilt compressors? Price range is rather wide > from > > > > >>what I saw on eBay. I'm also considering having the hoses rebuilt > > > > >>depending on cost. An ac charge lasts only 4 months at this point > > and > > > > >>the compressor is attracting lots of oil/dirt. I'll do some leak > > > > >>detection too to be sure. > > > > >> > > > > >>_______________________________________________ > > > > >>a2-16v-list mailing list > > > > >>[email protected] > > > > >>http://mail.a2-16v.com/mailman/listinfo/a2-16v-list > > > > > > > > > >_______________________________________________ > > > > >a2-16v-list mailing list > > > > >[email protected] > > > > >http://mail.a2-16v.com/mailman/listinfo/a2-16v-list > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > a2-16v-list mailing list > > > > > > > > > > > _______________________________________________ > > > a2-16v-list mailing list > > > [email protected] > > > http://mail.a2-16v.com/mailman/listinfo/a2-16v-list > > > > _______________________________________________ > > a2-16v-list mailing list > > [email protected] > > http://mail.a2-16v.com/mailman/listinfo/a2-16v-list > > > _______________________________________________ > a2-16v-list mailing list > [email protected] > http://mail.a2-16v.com/mailman/listinfo/a2-16v-list > _______________________________________________ a2-16v-list mailing list [email protected] http://mail.a2-16v.com/mailman/listinfo/a2-16v-list
