Temperature Gauge

By Andy Y, April 29, 2009

A temperature gauge is a device on the dashboard that displays the engine coolant or oil temperature. It can either be an analog gauge with a needle, a segmented display that moves between hot and cold, or a digital display of the actual numerical temperature.

Symptoms of a Bad or Failing Temperature Gauge

  • The gauge may read erratically or stick in the full hot or full cold position
  • The back lighting may fail, making the gauge hard to read at night
  • One or more "bars" of a segmented display may not illuminate

Temperature Gauge Related Repair Advice

  • A temperature sensor or sending unit monitors the fluid temperature; its electrical resistance varies depending on the fluid temperature
  • A faulty sending unit or its related wiring can also cause erratic gauge operation

No comments yet...

Sign in to comment

Related Questions

See what others have asked about this, or visit the Questions page to ask your own question.
The outside temperature gauge seems to stick. i took it to the garage and they told me a wire was loose and pushed i...
I have 112k miles on the odometer. the temperature gauge will read hot. i will stop and turn off the van for about 2...