OMG! Chad, I just had one of those "Kick myself in the rear" moments of realization. I've replaced those adapter valves twice thinking the first ones were defective. You are genius!
I--on the other hand---am not so brilliant. Thanks! going to remove the old valve and pull another vacuum to see what happens. -Les On Aug 19, 2012, at 5:31 AM, Chad Rebuck wrote: > Did you remove the old valve from the r12 low pressure connector > before installing the r134 adapter? Also, my adapter wasn't opening > enough so we had to add a metal spacer to the pin on the hose side > adapter so that it pressed the pin a tiny bit further. > > On Aug 19, 2012, at 12:18 AM, Les Noriel <[email protected]> wrote: > >> Doing this very same thing on my Corrado. I decided to convert to R134. So >> far I've replaced those items which are notorious for failure-- the >> Receiver/Dryer, the High Pressure switch, all of the O-rings, and the >> Expansion Valve. Compared to my Golf MK2, the Corrado engine bay is very >> tight. I have to literally disassemble so many other systems just to gain >> access to the fittings and hoses. I've been able to pull a vacuum for over >> an hour and it does not leak down. However, I've been unable to add oil or >> refrigerant. It appears too easy to pull a full vacuum and I suspect I'm >> only evacuating a portion of the entire system. There may be a blockage >> somewhere in the system. >> >> I have another compressor so I'm going to replace it. Since I have to remove >> everything up front to gain access to it, I might as well replace the >> evaporator as well. >> >> It's going to be a hot summer! >> >> -Les >> >> On Aug 18, 2012, at 9:02 PM, Chad Rebuck wrote: >> >>> 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 >> >> _______________________________________________ >> 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
