Engine temp gauge showing low temp?
#1
Engine temp gauge showing low temp?
Usually runs right at 190* at hwy driving but in past week have noticed that it indicates 140-150* after 30 minutes of hwy running. No problems, no leaks, fluids all fine. Have 255K on the engine...I'm thinking maybe thermostat stuck open?? Any suggestions? Doc
#2
Change the thermostat with a good quality replacement and see from there. In my opinion its one of the cheapest things to just so and see if it works. If your really determined to not spend unnecessary money you can pull the thermostat and test it with water if its opening prematurely. Put a pot of water on the stove and measure temperature with the thermostat in the water And watch the thermostat as it heats up. If its stuck open when You pull it its obvious. Way I see it if something is as cheap as a thermostat then just throw the part at it. Its not like throwing 100s of dollars in guessing which extensive testing would make sense.
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