Q: Both Of My Car Fans Keeps Running While My Car Is Off

asked by on

Both of my car fans stay running after my car is off, so I have to disconnect the battery.Then after I took it some mechanic who did something where I can drive my car without overheating as long as I keep my a/c on which I am burning alot of gas.

If the fix consisted of disabling the automatic control of the cooling fans, it will actually be easier to just fix the original problem and restore the car to normal (intended) operation so that you don’t have to use the A/C to get radiator fan operation. Basically, the original problem is likely due to a stuck on relay or a component in the fan circuit that is itself faulty and commands the relay on even when it is supposed to be off. The fan circuit is documented in the vehicle wiring diagram, which the mechanic of course will have, and resolving this is just a matter of tracing the fan circuit to find the point at which the circuit is being mistakenly powered even as it is commanded off or is supposed to be commanded off based on the sensor inputs controls (e.g., the coolant temperature sensor) that apply to the circuit. If you want this resolved, please request an electrical problems diagnostic. If you request that service, the responding certified mechanic will get this diagnosed and resolved, right at your location. If you have further questions or concerns, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.

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. Both Of My Car Fans Keeps Running While My Car Is Off

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: Engine light blinking and the oil light come on. Accelerates slow but when you get to about 30 mph it smooth out. Then when you slow down it start shake.

For the cylinder that has excessive oil in it, the oil is either coming in for the piston rings being worn or the valve guide is leaking on the intake valve causing the engine to consume the oil. If the...

Q: I put too much oil in my car and its smoking

You should drain it down or have it changed. Over filling oil can cause the engine to get locked up from too much oil in the crankcase. I'd recommend getting some assistance from a certified mechanic who can come and...

Q: Sometimes it starts, sometimes it doesn't.

Hi there. This does sound like a voltage issue. I would start by doing a load test of the battery and the alternator. Most of the time it is a battery issue. I would also check the connections at the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...