FW: Coolant temp switches (83 urq)

[Buchholz, Steven]

... can't post to the list from home right now ... but this has been
discussed on the urq list.  The owner's manual for the urq states that
the light is there to warn the driver not to push the engine too hard while
it is cold.  It is not a switch like the overheat switches, but a variable
resistor.  On my car the light will come on moderately brightly when the
engine is say below 40degF, and will dim as the engine warms.

Yes, you can add a temperature gauge ... it fits in place of the boost
gauge on the ury's IC.  I believe it was Tony Lum that posted the details.
You need to replace the temp sender with one that has the appropriate
temperature coefficient for the gauge (i.e. a sender for the car the gauge
came from), but the wiring is all in place.  When I started doing this a
month or so ago I found that perhaps the biggest issue is finding a temp
gauge with a face that matches the graphics on the urq's IC ...

HTH!
Steve Buchholz
San Jose, CA (USA)

----- Original Message -----
From: "Browning David" <BrowningD at tce.com>
To: <quattro at audifans.com>
Sent: Friday, September 28, 2001 7:36 AM
Subject: Coolant temp switches (83 urq)


> I'm trying to understand the function of the coolant temp switches
found
on
> the rear of the engine (cyl. head) on my WX '83 urq.  The Bentley
shows it
> being a dual switch with both connections going to the warning lights.
One
> appears to be for high coolant temp, and the other says "cool. low
temp..."
> What does that mean?  The temperature is too low and the warning light
will
> come on?  (That would be anytime it's cold.)  It doesn't seem like a
low
> level detector, because that would be in the reservoir.
>
> On a related theme, I would like to install a water temp gauge.  Any
neat
> tricks with senders (factory or aftermarket) and that I can try with
an
> aftermarket gauge?  I've thought about getting the radiator outlets
(from
> the cylinder head) that have places for switches/senders like some of
the
> 4000's and 5000's have.  The same would go for oil press/temp gauges,
too.
>
> Thanks,
> dB
> '83 Urq (WX)
>