Skip the auto shop - Our mechanics make house calls

Q: Started reading high engine temperature

asked by on

I was driving home from the store and it read high engine temperature so I rushed home and opened my hood and turned the car off. Wondering what to do

My car has 166876 miles.
My car has an automatic transmission.

A: This can be caused by a number of things su...

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. The coolant fan switch helps to maintain the proper coolant temperature by turning the fans on and off at specific temperatures. 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. When your thermostat is not working properly or is stuck closed, this will not allow the coolant to properly circulate through the engine, which may cause the engine temperature to fluctuate erratically or in some cases just remain hot. I would suggest having an expert from YourMechanic come to your home to diagnose your cooling system so the correct repairs can be made.

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: Steam is coming out of coolant reservoir.

Hello. If your coolant overflow tank is steaming and overflowing, then that means the vehicle is running hotter than normal, and may even be overheating. The vehicle will need to be inspected for possible overheating issues and any repairs can...

Q: what is the easiest way to replace the upper radiator hose?

Hey there, thanks for writing in about your 1991 Mercedes-Benz 300E. You should not have to remove any engine components to replace the upper radiator hose. The only thing that you will need to do is drain the coolant. If...

Q: ABS light on

the ABS light is most likely on due to one or more of the wheel speed sensors going bad. Some front and rear model sensors will need the complete hub replaced. The system will need to be tested to see...

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...
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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...