Skip the auto shop - Our mechanics make house calls

Q: Temperature gauge

asked by on

Temp gauge starts at high when it's been left off for the night in the cold. And remains at high when driving but moves a little more, as if it was reading cold going to normal. But from high to pay high. Coolant level was fine

My car has 238000 miles.
My car has an automatic transmission.

It sounds like you may have a faulty temperature gauge or a faulty temperature sensor. As you may know, there is a sensor that measures the temperature of the coolant that relays this information to the computer which then sends this information to the temperature gauge. When this sensor is not working properly, you may notice in erratic or inaccurate reading as you have described. I would recommend having an expert from YourMechanic come to your location to diagnose your temperature sensor.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Why did my car leak oil? 2004 Cadillac DeVille

Hey there. You must have gotten the oil filter double gasket from the old gasket O-ring left on and put a new filter on, and it would not let the new filter seal. Remove the oil filter and check for...

Q: Won't start

You first need to check and see if the engine has lost fuel pressure or spark. If you lost fuel pressure then you need to locate the fuel inertia switch in trunk on the trunk hinge bracket. The switch will...

Q: Car won't start

You may have a bad fuel pump. The fuel pump may have been burned up if you ran it out of fuel or ran it low a lot of times. The fuel pump uses the fuel to keep the pump...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...