I have experienced a stuck temp gauge
several times - it displayed one temperature for a couple of hours without
change. Then, suddenly, it started working again.
Every time this happened I was on very dusty, bumpy roads - however,
I have no clue whether that had any influence at all.
The display did not change after I cleaned the connector to the sending
unit.
After opening the hood you'll find access to the sending unit and wiring.
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