[Tigers] Temp Gauge Reading High

[Stu]

A high reading indicates there is a higher current flowing through
the gauge,  so a poor connection is unlikely.  Is your tank near empty or
full?  A bad regulator might make less of a difference if the gauge is near
empty.

The voltage regulator gets its ground through it's mounting screw.  It
would not be a first if there's a bit of corrosion under there.  In a quiet
place, turn on the key, don't start it, and you should be able to hear the
stock voltage regulator ticking away..

For some more hints, here's a link to my old article on gauge
troubleshooting.

TigersUnited.com
<http://www.tigersunited.com/techtips/BrennanGauge/rt-BrennanGauge1.asp>

Both gauges have the same innards, so you can swap leads and see what
happens with the pointer angles.

Stu

On Thu, Aug 21, 2025 at 5:57 PM gharlowe--- via Tigers <
tigers at autox.team.net> wrote:

>
>
> Hey all –
>
>
>
> It’s been quiet here so hoping to T-up an easy discussion.
>
>
>
> My temp gauge is reading about 25 degrees high.   I noticed it after a
> shop installed a new clutch, which required the engine to be removed,
> coolant drained, etc., but nothing that should have affected how the gauge
> reads.  Running on a cool day, temps were reading around 215-220 degrees.
> To ensure I wasn’t actually in danger of overheating, I checked various
> water-cooled locations with an infrared thermometer.   Highest reading was
> right at the water neck/thermostat housing (191 deg F).   The fuel gauge is
> reading accurately.  I understand the under-dash instrument stabilizer can
> affect both instruments, but in this case, only one gauge is off.  I plan
> to check the ground to the temp gauge and clean contact points at the
> engine sending unit and at the gauge.   Any other suggestions?
>
>
>
> Thanks and I hope all is well out there!
>
>
>
> Graham Harlowe
>
> B382001466
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