Thanks to everyone for the suggestions. Ken, your suggestion was the
winner. I rotated the switch back and forth several times, then started the
engine, and tested the switch. It works fine now. My guess is that the
contacts were a little corroded from lack of use this winter. It's really
nice to have the air conditioner is working again.

Ryan

On Tue, Feb 19, 2019 at 2:57 PM kenneth wilford (Van-Again) <
kenwilfy@comcast.net> wrote:

> Ryan, it could be your switch in the dash.  I have had them be flakey.
> Sometimes, after sitting for a while, I just wiggle the switch around a bit
> and it starts working on the other speeds.  Or you can buy a new switch and
> try that.  Or you can take the switch apart, clean the contacts, and put it
> back together.  Just sitting contacts can get just a bit more corroded.
>
> The other part I have had lots of problems with is a relay that has the
> number 13 on it that is located in the rear driver's side corner area of
> the van (to the left of the rear hatch).  If this relay fails it will cause
> all kinds of strange problems.  If your switch checks out, that would be
> the next thing I would check.
>
> Most likely it will be either of those.
>
> Ken
>
> On Tue, Feb 19, 2019 at 4:50 PM Ryan Cresawn <jrcresawn@gmail.com> wrote:
>
>> My 1991 Vanagon Westfalia Camper has a 4-position fan speed selector for
>> the air conditioner. The 2.1l engine is stock, but the air conditioner
>> compressor was replaced years ago with one compatible with R-134a. In
>> November I replaced the condenser and pulled a vacuum on the system for
>> five days. Then I disconnected the A/C gauge set and vacuum pump. Last
>> week
>> I took my Vanagon to a local air conditioner repair shop. They charged the
>> system and added oil. The air conditioner cools well, but I discovered on
>> Monday before sunrise that my only working fan speed is 4. All four fan
>> speeds worked prior to November of last year when I stopped using the air
>> conditioner. Should I take it back to the shop to ask them about the fan
>> speed selector or try to identify the cause of the problem and repair it?
>> Any suggestions on where to begin the troubleshooting?
>>
>> Thanks,
>> Ryan
>>
>
>
> --
> Thanks,
> Ken Wilford
> John 3:16
> www.vanagain.com
>