Skip the auto shop - Our mechanics make house calls

Q: Car overheats when idling

asked by on

My car overheats when it's idle.

The cooling fans on your vehicle are controlled by your powertrain control module through the fan relay when your vehicle gets to a set temperature. There have been issues of the fan relay and module failures. If these two components are tested to be ok, and power is getting to the fan, you may have a bad fan motor. I recommend having a mechanic, such as one from YourMechanic, diagnose your overheating issue, and recommend the best path to repair.

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: MISFIRE CYLINDER NUMBER 3

Hi There, There are several reasons that can cause a valve to burn. One is normal wear and tear. As miles are put on an engine, the constant pounding and heat erosion wears away the metal on the face of...

Q: I am getting a 2007 Scion tC. I am having a mix feeling about it.

Hi there. The maintenance is good on the Scion vehicles. All parts are designed to wear and tear out, but as long as the maintenance is kept up with the vehicle, then there should be minimal maintenance to perform. I...

Q: Why would the battery and brake light come on for no reason as well as the transmission jerking when accelerating from first to second?

Hi there. Your alternator may not be working properly. If so, turn off all the lights and have the engine running at night. Then from an idle condition, rev up the engine. If the brake and battery light become brighter,...

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 Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...