Skip the auto shop - Our mechanics make house calls

Q: Cooling fan not kicking on

asked by on

Tested fan and it still works just wont kick on. Tested relays and fuses and theyre all good. Car has not been modifide and all wiring are still stock and looks good and clean. Coolant temp sensor seems to still be reading temp accuratly. Whats next to check? Car only over heats when sitting for 5+ minutes with engine on.

My car has 130000 miles.
My car has an automatic transmission.

A: The first thing I would do is check to make...

The first thing I would do is check to make sure that you have a good ground for the fans, then I would check for voltage output from the relay and then at the fan connector. I would also use a thermometer to monitor the coolant temperature to verify that the temperature sensor is sending an accurate reading to the ECM. You can use a scan tool to read what the sensor is indicating and compare that to the actual temperature of the coolant. If you need help with this repair, a certified technician, like one from YourMechanic, will be able to determine the cause of your AC problem.

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: Malfunction Transmission light appeared on dashboard

Automatic transmissions can be tricky. Luckily, as odd as it seems, the fact your vehicle is setting a warning light is a good thing. This allow you to run a diagnostic scan for trouble codes, and will help narrow down...

Q: Transmission problem

Hello, This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you’re going down the road, the car’s computer analyzes data being sent by vehicle speed sensors and engine speed sensors. Based on this...

Q: How do I select a song from a composer?

You can control your iPod with the sound system controls to help you choose a song. To choose a song from a specific composer, follow these steps: Press the Menu button. Rotate the Tune-Scroll knob to Composers, then press...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.