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.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: 08 Kia spectra do I need just the a/c compressor or the kit?

I am not sure what you mean by a kit. I do however recommend replacing the a/c compressor with a new receiver drier and flushing out the entire system and adding fresh oil and refrigerant for the a/c.

Q: No heat. Replaced coolant and replaced thermostat. Car is still overheating and has no heat. Only cold air comes out.

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...

Q: Shifter not working

Hello. Your tail lights and brake lights could be fixed by replacing the bulbs that aren't working. If that doesn't fix the problem, it is possible that there could be a problem with the fuses and relays. As to the...

Related articles

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...