Date: Thu, 10 Aug 2000 21:14:52 -0400
Reply-To: Karl Mullendore <thewestyman@mindspring.com>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Karl Mullendore <thewestyman@mindspring.com>
Subject: Re: 89 syncro westy ac saga continues
Content-Type: text/plain; charset="iso-8859-1"
I guess you've ruled out the obvious: the compressor is running? With
pressures that high on the low side, and that low on the high, makes me
wonder if the compressor is even working. Clutch working solidly? The only
other thing that comes to mind is moisture, but you said it has been
vacuumed several times. My AC service manual points to a faulty compressor,
or stuck EPR or STV (both of which I am fairly certain it doesn't use). Good
luck, hope this is of some help...............
Karl Mullendore
Westy Ventures
1987 Syncro Westfalia 1.9TD
----- Original Message -----
> HELP!
>
> Have replaced nearly everything in the ac system and it still isn't
cooling.
> Techie tells me this story:
>
> When van was first diagnosed, ac was operating, somewhat cool, but not
> cold... good air flow. He measured equal pressure (approx) from the high
> side (110 and low side (100). From this determined that the compressor
was
> not functioning properly. System had 2 1/2 pounds of freon in it at that
> time.
>
> Got compressor and receiver/drier from bus depot. Original compressor
> #7411... new one #7401... Ron Salmon assured me that was OK. Tech
replaced
> comp and rec/dry, but used the old clutch from the original compressor
> because the new one had a smaller diameter pulley and different plug-in on
> the wiring harness. After hook up, he evacuated the system for one
hour...
> added freon again (R-12 because freeze 12 is not available in Hawaii he
> says), and fired it up. Same symptoms. Equal pressure... no cold air.
>
> So, he figured since we have a new compressor, maybe the expansion valve
is
> stuck open. He replaced the expansion valve, evacuated the system for
> thirty minutes, recharged with 2 1/2 lbs of freon again. This time he got
a
> low of 70-80 lbs and a high reading of 150 lbs. No cooling, no frostings,
> no cold lines.
>
> Evacuated again. added again. Back where we started... 110 high, 110-120
> low. Adding additional freon did not help.
>
> He's stuck and so am I. Wanted to go camp tonight, but...
>
> Anybody got an idea?
>
> Mick Kalber
| 
