

| Subject: | Re: Air conditioning |
| From: | Jim Felder |
| Date: | Sat, 2 Jul 2016 14:37:31 +0000 |
They will make you a better mechanic, that's for sure. The longer you keep 'em the better you get, even if it's just in the diagnostic department and you never turn a wrench. Jim On Sat, Jul 2, 2016 at 9:26 AM John Rodgers <jrodgers113@gmail.com> wrote: > But we are all kind of nuts and love our Vanagons!! > > John > On Jul 2, 2016 08:38, "Dennis Haynes" <d23haynes57@hotmail.com> wrote: > > > I definitely agree with Larry. One thing you will find as a new Vanagon > > owner is that most regular shops are not equipped or willing to bother > with > > vehicles of this vintage, never mind the Vanagon with its idiosyncrasies. > > > > The air conditioning is American based but its installation layout makes > > for some servicing difficulties. The evaporators never go bad, the only > > thing that happens to them is they get clogged with dirt or the foam > > filter-water stopper disintegrates. There is an expansion valve that > > sometimes fails and there is a replacement for R-134a conversions. > > Servicing the evaporator or expansive valve is a labor intensive > operation. > > > > A first waring sign that you tech was not up to the job is if he knew > > where the high side service fitting is. So did he remove the shelf and > > corner piece in the rear cabinet to get to it? Not only is it important > for > > the high side pressure to be checked as part of normal AC operation you > > need to make sure the radiator/condenser cooling fan goes into the higher > > speed mode as pressure increases ~200 psi. There is a lot of electrical > > involvement with this system. > > > > As for charging the system I have really found that the initial charge > > especially R134a has to done by weight. I also find that topping the > system > > off or using the stuff in cans just doesn’t provide full performance. > When > > these come on for service I begin by a full recovery. This also tells me > > how much was left. Was this a slow leak of do we have a problem. Now that > > refrigerant in bulk is cheap I then do a full charge, 1,400 to 1,500 > grams > > seems to give really good results. Yes this is a bit over charged but all > > that hose length takes it. Much more and things will go wacky. > > > > At best the performance of the Westy AC is bit lacking. You get that nice > > cold draft on the back of the head and neck while the sun in your face > > keeps it sweating but properly working it provide great relief. > > > > And yes, > > VW- turning drivers into mechanics for over 50 years. You will soon be > > joining our club unless you have an awful lot of money. > > As for this being low cost way to travel I have some guidelines. > > If you couldn’t afford it new, you probably can’t afford it used either > > unless you get creative, skilled, and somewhat lucky. > > These vehicles were expensive back when they were available and they > > didn’t sell well back then. Fun Bus was on the dealers lot for almost 6 > > months before I took it home. > > It was for sale because some previous owner no longer wanted it. It is > > best if you can figure out why. > > Whatever you paid it most likely was just a down payment. If you paid a > > lot your expectations are high and it will take more to meet or maintain > > those expectations. > > > > Dennis > > > > > > > > > > -----Original Message----- > > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf > > Of Larry Alofs > > Sent: Saturday, July 2, 2016 8:13 AM > > To: vanagon@GERRY.VANAGON.COM > > Subject: Re: Air conditioning > > > > You should get a second and third opinion about that evaporator > > replacement. There are many other and more likely causes for poor AC > > performance, low refrigerant charge being the most likely. > > > > With a recirculating system, if the air it's taking in is very hot, the > > air coming out is not going to be very cold at first. I generally feel > > that my AC is working pretty well if it reduces the temp by 30F or so. > > This means that if the van has been standing in the sun and the air in > back > > is 110F, the air coming out of the AC might be 80F at first. After a few > > minutes of circulation, it starts to feel more like actual AC. > > > > Do you know if the system still has R-12 in it or if it has been > converted > > to 134a or something else? Did this tech actually measure the low and > high > > side pressures with the system running? It's complicated. :-) > > > > I think the saying goes something like: "VW, converting owners to > > mechanics for over 50 years." > > > > Larry A. > > > > > > On Sat, Jul 2, 2016 at 3:02 AM, Gordon Mah <gordonmahung@gmail.com> > wrote: > > > > > Thank you Larry, Dennis and Stan, > > > > > > I'll look for those "Bently" manuals even though I don't have a Bently. > > > ;). I know it has freon because the tech I took it to told me that he > > > checked it. Problem was that I was expecting air to come out the > > > front and side vents too. Yes, they did come out the rear as you guys > > > said, although not all that cold. Somebody told me that the > > > "evaporator" probably needs replacing. We'll see. I'm realizing that > > > Westy owners all seem to be mechanical tinkerers. Does any air ever > > > come out from the side vents above the sliding door? > > > > > > Thanks again. > > > -g > > > > > > Sent from my iPad > > > > > > > On Jun 29, 2016, at 5:05 PM, Dennis Haynes <d23haynes57@HOTMAIL.COM> > > > wrote: > > > > > > > > So the seller didn't show you how things work. Do you have the > > > > owner's manual? You may want to get one. As a Westy or vanagon > > > > newbie you will > > > want > > > > to get a Bentley service manual ASAP. Learn as much as possible > > > > before > > > tings > > > > break and get ready to catch up on some overdue maintenance. If the > > > > van > > > is > > > > low mileage it is a good bet it spent part of its life not running. > > > > As > > > old > > > > dormant systems and rubber/plastic parts are put to use you will be > > > > surprised as the things that will need service within a year. > > > > > > > > Freon is a brand name for refrigerants. How do you know the system > > > > has an adequate charge of refrigerant if you don't know how to turn > > > > it on? Does > > > it > > > > even have AC? For an 87 Westy the AC controls are usually to the > > > > right of the radio. There is no AC from the dash vents, only the > > > > vents over the > > > rear > > > > seat. It is common for these air conditioners to have both > > > > electrical and refrigeration/leakage problems. The electrical is > > > > somewhat complicated especially with the interface to the radiator > > > > fan. Alldatadiy.com is a > > > good > > > > choice to get service information including the wiring diagrams. On > > > > the Westy most of the AC electrical is inside the rear cabinet. You > > > > have to remove a shelf and that corner piece for the electrics ad > > > > high side > > > service > > > > fitting. > > > > > > > > Dennis > > > > > > > > -----Original Message----- > > > > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On > > > > Behalf > > > Of > > > > Gordon Mah > > > > Sent: Wednesday, June 29, 2016 3:08 AM > > > > To: vanagon@GERRY.VANAGON.COM > > > > Subject: Air conditioning > > > > > > > > Just bought me a 1989 Westy and I can't figure out how to get the > > > > air conditioning to work. It has freon. I tried all the knobs and > > > > vent > > > sliders > > > > and all I get is either heat or just air from the outside. Does > > > > anyone > > > know > > > > the secret combination of sliders and their positions to make this > > > > baby > > > keep > > > > me cool on such hot days? > > > > > > > > Thanks! > > > > > >
Have something to add on this topic today? Revive this thread in the forum »