I had nothing when the high-speed side should have worked, so I need to see
if 12 V gets to the fan at all.

On Sun, Oct 15, 2017 at 6:42 AM, Larry Alofs <lalofs@gmail.com> wrote:

> If you have a resistor behind the DS headlite, that's the first thing to
> check.  All three terminals should show some continuity to the others.
>
> Larry A.
>
>
> On Sat, Oct 14, 2017 at 7:51 PM, Mark Hersh <cmwolfsburg@gmail.com> wrote:
>
>> Greetings vannuts,
>>
>> Subject vehicle is 1986, 2.1L waterboxer with auto trans (early in model
>> year; built Aug 85) with factory AC that has been pretty much
>> disconnected/removed other than the dash switch to the left of the
>> steering
>> column.  That used to operate the fan until I was messing around in there
>> some years ago doing a headlight upgrade (Frank Condelli kit).  After that
>> the AC switch did not work the fan but everything else was good (except
>> for
>> the key-in-ignition chime, which I miss, but that may have been the result
>> of a new ignition switch repair).
>>
>> The radiator was replaced in 2008 and coolant regularly flushed/serviced,
>> so there is about 40K miles on the radiator (don't know on the coolant). I
>> didn't do the rad replacement so I don't know if the thermoswitch was
>> replaced then, I would guess so as it was part of an engine
>> replacement/tranny rebuild/get the sucka roadworthy.
>>
>> I can't remember the last time hearing the fan, probably over the summer
>> (haven't driven much since).  The other day when I was parked with engine
>> running (waiting for emissions testing) my fan did not come on and my
>> gauge
>> was elevated and light blinking. Got it moving and it calmed it down some
>> and I got home.  I let it cool a couple hours and went back to the
>> emissions station (and passed) and the fan did not come on but I never got
>> so hot that the light blinked.
>>
>> Yesterday I did the troubleshooting Ken Wilford outlined at
>>
>> https://www.vanagain.com/troubleshoot-your-radiator-fan/  (Thank you,
>> Ken!)
>>
>> The only response was clicking from the high-temp rad fan relay (on top of
>> the under-dash fuse panel).  No low-speed response, no high-speed
>> response,
>> other than the clicking relay.
>>
>> I suppose the next step is either testing for 12 V at the fan (with the
>> thermoswitch plug jumped) or apply 12 V directly to the fan) and see the
>> results.
>>
>> I'm thinking also that perhaps I should clean the ground for the fan, and
>> I'm guessing that it is nearby.  But before I go hunting for it I thought
>> I'd ask.  I know the low-speed resistor is behind the drivers' side
>> headlight (thanks again, Ken).  Is the ground there also?
>>
>> Thanks
>>
>> Mark
>>
>>
>> --
>> 86 Campmobile Six-Seater "Monty"
>>
>> Black dogs are euthanized at a greater rate than other-colored dogs,
>> regardless of temperament.  Learn about Black Dog Syndrome at
>> http://www.blackpearldogs.com/  Learn about black dogs in a Vanagon at
>> http://www.pbase.com/mhersh/image/108220533
>>
>
>

--
86 Campmobile Six-Seater "Monty"

Black dogs are euthanized at a greater rate than other-colored dogs,
regardless of temperament.  Learn about Black Dog Syndrome at
http://www.blackpearldogs.com/  Learn about black dogs in a Vanagon at
http://www.pbase.com/mhersh/image/108220533