There's a little voltage regulater for the guages. Costs like 3 bucks +
shiping from list vendors. Fixed my guage problem.

HTH,

John Flaherty
Portland, ME

----- Original Message -----
From: "Andrew M Fox" <andrewf@HAWAII.EDU>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, September 26, 2001 11:45 PM
Subject: Re: Temp & Fuel gauges not accurate

> You can check the operation of the sending units for fuel and temp by
> checkin the resistance, measured in ohms with a voltmeter.  The values for
> the temp gauge are below.  The values for the gas gauge are on gerry
> somewhere in the technical section.  If the senders are working properly
> you can check the gauges by buying some resitors from radio shack and
> "faking" the signal to the gagues.  Good luck and here is the temp sensor
> data:
> 32 F    5,000-6,500 Ohms
> 68 F    2,000-3,000 Ohms
> 104F    1,000-1,500 Ohms
> 140F    500-675 Ohms
> 176F    275-375 Ohms
> 212F    150-250 Ohms
>
> Andrew Fox
> www2.hawaii.edu/~andrewf/vanagon/links.htm
>
>
> On Wed, 26 Sep 2001, Hans Roos wrote:
>
> > I've got an 89 Syncro and the fuel and temp gauges both work but they do
> > not give accurate readings.  I have already checked & replaced the
voltage
> > regulator for the gauges but that made no difference.  Here is what is
> > occurring:
> >
> > Fuel Gauge - Fill the tank and it reads full, as I drive it falls very
> > quickly, after about 100 miles (which takes about 1/2 a tank) it reads
dead
> > empty, filling it up starts the process all over again.  When the
problem
> > first started it was only intermittent - now it happens all of the time.
> >
> > Temp Gauge - It simply reads to low.  It used to read just fine but now
it
> > barely gets off of the bottom white square.  I know the temps are higher
> > than this as the cooling fan kicks in.  I have replaced the sender - no
> > change :-(
> >
> > I do not think the inaccuracy of the gauges is caused by the same
problem
> > as the problems started happening many months apart but I've been wrong
> > before!  Any suggestions or ideas?
> >
> > -Hans
> >
>