Assuming the electrical connections are uber clean (especially grounds).....

On my Jetta swap, I used:

Hastings gauge + it's sensor in coolant outlet on head (stock location).
Possibly used Hastings gauge with Jetta coolant sensor, same location.
Jetta sensor now used with a WBX temp gauge. (Jetta and WBX sensor may
have same specs (resistance vs temp chart)

All combinations seem to be more accurate than what you're seeing.
Currently, WBX gauge reads dead center, climbing/lowering slightly
depending on conditions.

My guess is you're still dealing with either a wiring issue, or sensor
placement. (are you using the stock location? Can't see why one
wouldn't)

Of note, my aftermarket gauge took 12V power from 15 (ign. on). If I'm
not mistaken, the WBX gauge uses ~ 10 volts as supplied from the
voltage stabilizer. I **highly** doubt tech could or would take power
for aftermarket gauge from the Vanagon inst. cluster power but......

Neil.

Neil.

On Wed, Apr 20, 2011 at 7:53 AM, Anthony Egeln <regnsuzanne@yahoo.com> wrote:
> Volks,
> Since he can't cure my ailing stock temperature gauge, my tech has installed an after-market gauge.
> If you have done this already, or if you would do this, where would you install the sender?
> He currently has it on a line near the thermostat, but the temperature has only reached as high as 140, and normally just gets to about 100. �So he will look for another spot.
> I will add that his thermal gun reads right at 195 at the thermostat when warmed up, so we know the engine is getting to the correct operating temperature, despite what the gauge reads.
> All ideas are appreciated. Thanks, Anthony'89 Syncro GL (Hidalgo)
>

-- 
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines