[radtech]

Can you run your truck without one? Live where it's hot so I don't really need the heater. Thanks!

 

[1dieselman]

No, because it can cause the engine to continue to get hotter and hotter because there is nothing to regulate the flow so that coolant in the radiator has a chance to cool. Or it could also cause the truck to run to cool in colder climates resulting in poor performance and mileage.

 

[RD97]

Also when the thermostat opens to allow flow to the radiator, it blocks off the bypass flow path. (If I recall correctly)

 

[MarkEkberg]

As stated above. If you remove the stat you will not direct coolant flow through the radiator.

While the gauge will read normal, you will actually over heat.