Skip the auto shop - Our mechanics make house calls

Q: I have a 2010 saturn outlook XE AWD, I have noticed that my temperature gauge goes from 210 to 235 while I drive over 70 mph

asked by on

My car's temperature gauge goes from 210 to close 235, when I start driving over 70 mph. Then it it will drop back to normal while going down hill or slower speeds. I have the thermostat replaced already, almost a year ago. Is it the thermost at again?

A: You may have a problem with the radiator no...

You may have a problem with the radiator not flowing through all the channels and this will cause the engine to run hotter at higher speeds. You may also want to check the radiator cap to see if it is holding pressure as specified. Your transmission also runs hotter at this speed and will heat the coolant up more since the cooler goes through the radiator. Make sure the front of the radiator is clean and free of bugs and debris, and the fins are straight. If you notice this problem getting any worse, have a certified technician diagnose the overheating issue in person in order to have it corrected.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: what is optimal operating temperature supposed to be? is 215 too high?

Hey there. 180 is normal for your car. Although 215 shouldn't hurt anything if it only stays there for a minute or so and cools back down, it really should not be getting this hot. There are different thermostats available...

Q: Engine rattling noise

Hello. It sounds like a pulley for the belts is going bad. The water pump, alternator, power steering pump, or A/C compressor could have a problem as well, that is causing the noise you hear. The worst case scenario is...

Q: My Speed Sensor is not working-

Sensors are made of plastic and plastic doesn't like to be warmed and cooled. Which is exactly what is happening you your car everyday. Normally, plastics will last a 100,000 miles or so. With a new sensor, it is not...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.