Skip the auto shop - Our mechanics make house calls

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.

A: The radiator fans have three different rela...

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 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・Save up to 30%

Get a quote

What others are asking

Q: My clutch will not work.

Your clutch hydraulic system works very similarly to your brake system. If the clutch pedal is stuck in the down position and cannot be moved up at all then the clutch master cylinder has failed and has seized internally. If...

Q: Valve cover oil leaks

Thank you for your inquiry. The valve cover seal is a common failure item and generally and easy fix. In your case, the upper intake plenum/manifold wraps over the top of the engine and must be removed to complete the...

Q: What are the two modes of operation for seat belts?

You might think that your seat belts only lock down during an emergency – a collision, for instance. That’s true, but only partially. Your seat belts actually offer two modes of operation. These are emergency locking retractor (ELR) and automatic...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.