I'd pull the sensor and put it in some hot or boiling water while hooked to
your gauge and see what it reads.
Bob
---- vintage.racer@comcast.net wrote:
> Hello All:
>
>
> Need some opinions on what I think might be a problem with my 1969 TR6 water
>temp gauge is an electrical unit. Scenario: recently, I've noticed the car
>running a bit hot, ie, the needle within an 1/8" of the red zone on the gauge.
>I recall at normal operating temp, the needle should be closer to half way
>(ambient daytime temps in the 80 - 90 degree range). Once the needle reaches
>this "hot" location, it never seems to come back down at all, regardless of
>whether I'm at speed or stopped. To me, this is not normal.
>
>
> What I've done so far: flushed the cooling system, filled with about 35%
>anit-freeze, remainder with distilled water; added a few ounces of Water
>Wetter; new temp sensor, new thermostat (180 degree), timing checked and spot
>on. So far no difference in the way the gauge reacts, indicates the engine is
>still running hot so I'm wondering if I might have a gauge going bad. Anyone
>have an experience with a faulty water temp gauge? Does it gradually go bad
>and give false readings? Thanks.
>
>
> Gary
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