Try the following - short the sensor to ground - guage should read max.
When cold sensor should read several hundred ohms. for various guage
readings
here are some rough values for he sensor resistance - half is about 30 ohm,
3/4 about 15 ohms, 1/4 is about 60 ohms and a short of 0 ohms (as above)
gives full reading.
To measure the sensor resistance simply disconnect wire to guage and connect
multimeter to ground and sensor terminal.
Also note that the fuel guage is identical to the temp guage but for the
markings on the instrument face.
So you can simply swap he connections over. If the fuel guage is reading
correctly then chances are the voltage stabilizer is working OK.
Currently with the cold weather - around freezing here - my temp guage does
not go much over 1/3. Normally in the summer it does read about the 1/2 mark
and goes higher when stuck in traffic. It was all a new setup this year.
Alan
____________________________________________________________________________
__
From: MKCASPIAN1@aol.com
Date: Mon, 9 Dec 2002 20:59:12 EST
Subject: Temperature guage
Hello fellow listers,
I have a 78 Spitfire, and the temp. guage was only reading about 1/3., even
though all summer it seemed really hot! At someones suggestion, I replaced
the sending unit with a brand new one. Now it only reads about 1/4 when
the
engine seems hot. Is my problem the guage, the sensor or maybe the
thermostat? Does anyone have a working guage they might be willing to part
with? Maybe its just becaus its only 18 degrees out!
John
78 Spitfire
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