Q: Fans keep running

asked by on

When the car is on, the engine fan keeps running. In addition, the temperature gauge points to hot, even when the not being driven or started. A local mechanic mentioned that I might need a modulator.

Hello. I would suspect that the coolant temperature sensor is faulty. The coolant temperature sensor is used to monitor the temperature of the coolant. If it is bad it can trick the ECU into thinking it is running hot. The ECU will then turn the fans on to try to protect the vehicle. Our company provides onsite vehicle inspection by trained technicians that will replace coolant the temperature sensor as well as check the rest of the cooling system for any other potential issues if requested.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Fans keep running

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: How much to fix a fan clutch

Hi there. The fan clutch controls how quickly the cooling fan spins against the radiator. The hotter the engine gets, the more the fan has to spin. If the fan clutch is not functioning correctly, the fan won’t spin at...

Q: Service stability light comes on too many times a day

I would need a little bit more information to answer this question fully. When you say the car bolts, I'm assuming that means that the car accelerates without input from you. If this is occurring, it sounds like there...

Q: Startup issus, error codes

Those codes: P0170, P0173, and P0335 are indicating that the airflow coming in that is read by the MAF sensor to set up fuel injection timing does not match what the oxygen sensors are reading based on the exhaust sample....

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...
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...
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...