Skip the auto shop - Our mechanics make house calls

Q: My thermostat needle goes to hot, but the car does not get hot. Is it the thermostate?

asked by on

My thermostat needle goes to hot, the temperature light comes on, but once I am driving on the freeway the needle goes back down. The car never overheats. Is it just a thermostat needing replaced?

My car has 148000 miles.
My car has an automatic transmission.

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds.

When this switch is not working properly, this can cause the fans to come on intermittently, all the time or sometimes not at all. When this happens you will notice a temperature spike and drop occasionally as the fan comes on and off. This may also explain why the temperature drops once you are on the freeway as the wind helps to cool the engine down.

I would suggest having a certified expert, like one from YourMechanic, come to your home to diagnose your cooling system and help you fix it as necessary.

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
  • Home
  • Questions
  • My thermostat needle goes to hot, but the car does not get hot. Is it the thermostate?

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: Belt squeaking.

A stretched belt or a faulty belt tensioner are the most likely causes. I would recommend having the tensioner checked first by a YourMechanic technician. If the tensioner seems to be working properly, the belt is the next likely cause....

Q: I've been told I have 2 thermostats on my 2013 Chrysler 200 touring?

There are two separate thermostats in your application, a primary and a secondary. The primary and secondary thermostats have different temperature profiles in terms of their opening temperature because they are located on different areas of the engine. The primary...

Q: I had to use my 4x4 and know it will not shift back to AWD it is stuck in 4lo

Based on your description, I believe that the issue is related to the transfer case. The transfer case could be having an electrical issue causing it to be locked in 4x4 low. I would recommend having your 4x4 system inspected...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...