Q: Radiator fans not working and car overheats while idle

asked by on

Replaced the radiator fan assembly but they still won't spin. It over heats when it's at an idle. Please help!

My car has 167000 miles.
My car has an automatic transmission.

The radiator fans have three different relays in the relay box in the engine compartment and they are all controlled by the Engine Control Module (ECM). The system has a low and high speed fan that is controlled by the ECM. If you have the system scanned with the correct device you can turn the fans on and off from the ECM to check if the entire circuit is okay or not.

I would suggest getting some help from a certified technician, such as one from YourMechanic, who has the necessary tools to properly diagnose your overheating issue. From there you will know exactly what needs to be repaired.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Radiator fans not working and car overheats while idle

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: Smell of gas in oil

Hi there. Your vehicle may be experiencing a lack of fuel pressure due to a clogged fuel filter or faulty fuel pump. Also, something to not look past would be the amount of spark (if any) that your engine is...

Q: My car is idling at 500 rpms is that normal? It's sounds like it's about to shut off but it doesn't

Hello. A low idle can be caused by a few different things. Before doing anything, I'd start by checking the computer for codes. This would tell me if the computer is seeing anything that is not correct. If there are...

Q: Ignition problems with my car

It sounds like your battery is no longer strong enough to accept a full charge. When the engine is running and the alternator is charging, if the battery does not receive this charge it will have the same state of...

Related articles

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...
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...
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.