Radiator

2005 volvo xc70 radiator fan continuously on high

2005 volvo xc70 radiator fan continuously on high
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  • Edward King
  1. Why does my radiator fan keep running?
  2. Why does my radiator fan not turn off?
  3. What are the symptoms of a faulty cooling fan switch?
  4. Should radiator fan run all time?
  5. Should radiator fan turn on when AC is on?
  6. When should my radiator fan kick on?
  7. How do I get my radiator fan to stay on?
  8. Why is my radiator fan so loud?
  9. Does the coolant temperature sensor control the fan?
  10. How do I know if my radiator fan relay is bad?
  11. What are the signs of a bad temperature sensor?

Why does my radiator fan keep running?

It's normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool. However, if the fan is running for an extended period, the fan itself can become damaged due to overuse. ... It's possible you may have a module or relay failing in your car.

Why does my radiator fan not turn off?

If the fan doesn't stop running, plug that sensor back in and unplug the coolant temp sensor on the thermostat housing. If the fan stops running, replace that sensor. If the fan still runs after unplugging both sensors, then problem might be with radiator fan control module located behind the glove box.

What are the symptoms of a faulty cooling fan switch?

Bad Cooling Fan Relay Symptoms

Should radiator fan run all time?

An electric fan SHOULD NOT run all the time. ... The fan turning on is normal and a consequence of the hot coolant, not a cause. The coolant may not be moving due to a water pump problem, blockage in the radiator or hoses, or a stuck valve, i.e., the “thermostat” in the coolant line.

Should radiator fan turn on when AC is on?

Both radiator fans should always run when the AC compressor is engaged. ... To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches about 200 to 230 degrees.

When should my radiator fan kick on?

Your radiator fan should kick in at about 200 degrees Fahrenheit. If you notice your vehicle is overheating or at the very least running hotter than it normally does, listen for the fan to see if you can hear it.

How do I get my radiator fan to stay on?

to make the fan stay on with the ignition switch just take the green wire out of the temp sensor on the t-stat housing and ground it to the block.

Why is my radiator fan so loud?

Worn bearings, bent or broken blades, and unbalanced rotating assemblies can cause a fan to screech, howl, or otherwise make noises it shouldn't. ... If you have a noisy radiator fan, don't put up with it any longer than you have to. Our expert mechanics are here to help with all your vehicle service needs.

Does the coolant temperature sensor control the fan?

The sensor works by measuring the temperature that's being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system. ... As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.

How do I know if my radiator fan relay is bad?

Symptoms of a Bad or Failing Cooling Fan Relay

  1. Engine running hot. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. ...
  2. Cooling fans do not function. Non-functional cooling fans are another common symptom of a potential problem with the cooling fan relay. ...
  3. Cooling fans stay on at all times.

What are the signs of a bad temperature sensor?

8 Symptoms of a Bad Coolant Temperature Sensor

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