Thermostat normal or no?

Lib88888 · Jan 25, 2025

Hi guys, my temp gauge rarely gets above 1/4, never seen it at half. My heaters work & blow hot air when needed, although on long drives the temp gets to 1/4 and then when I’m slowing down it soon goes back down.

Is this normal?
What effect is this having?

Thank you

KJowner · Jan 26, 2025

No, you are running cold. It will reduce power and fuel economy and potentially slightly increase engine wear.
Time for a new thermostat

WWDiesel · Jan 27, 2025

Lib88888 said:
Hi guys, my temp gauge rarely gets above 1/4, never seen it at half. My heaters work & blow hot air when needed, although on long drives the temp gets to 1/4 and then when I’m slowing down it soon goes back down.

Is this normal?
What effect is this having?

Thank you

What year model, and is it a diesel?
If a diesel, it should look like the picture when at normal temperature.
If it is running at 1/4 the gauge, your thermostat has failed and needs to be replaced.
Don't waste your money on any cheap chinaism knockoffs, they don't last or are bad right out of the box.

https://www.idparts.com/thermostat-four-seasons-liberty-crd-5142601aa-86200-p-16422.html

Lib88888 · Jan 27, 2025

Yep! Definitely doesn’t get to that temp. Looks like it’s definitely failed. It’s a diesel & 2007!

Thermostat normal or no?

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