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temperature sensor is bad

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Q: Why does the cooling fan turn on when engine is cold?
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Why does the engine cooling fan on a 1993 Toyota Corolla run when the car is cold and you turn the key on?

If the AC or Defroster is on, many vehicles will also turn on the cooling fan.


Fan does not turn on on 3000 gt?

HVAC fan? Engine cooling fan?


Which one is the cooling fan motor on a 2000 Honda Accord?

get in the car when it is cold, turn on the ac, then check under the hood. the fan that is not spinning when the car is cold is the cooling fan


Why does the Electric cooling fan comes on when engine is cold?

When air conditioning or front defroster are turned on it will turn on A/C compressor which requires the A/C condensor to be cooled (via radiator fan).


1997 Saturn cooling fan comes on only when you turn AC on any ideas why this is happening and how to fix it?

the engine temperature has to get to 225 degrees Fahrenheit to turn on. If the engine is reaching 230 degrees and it is not turning on the sensor for the engine cooling fan is most likely the culprit. As for the fan operation of the fan with the a/c that is normal


When you turn your ac on the engine runs hot even with the cooling fan running?

Yes, because your engine is on.


How does the fan work?

If the question is about the motor fan or engine fan, the main function of this fan is cooling the radiator of the engine which in turn is cooling the water circulating inside the engine unto the radiator and back. This keeps the engine at a fairly operable temperature without overheating and damaging damaging its parts.


What is the purpose of the thermostatic switch in a cycling clutch system?

A thermostatic clutch is usually used on a car's engine cooling fan. It uses a bi-metallic spring, which tightens and forces the fan to turn when the air temperature inside the engine compartment reaches a certain level. Basically is used to prevent the fan from wasting your engine's power when there is no need for cooling, by allowing the fan to freewheel when the engine is cold. It then serves as a device to automatically engage the fan and keep the engine cool when necessary.


1993 Nissan altima what does the engine coolant temp sensor do?

I believe it turns on and off the fan (1 out of 2) that cools the engine according to the temperature it's at. If it doesn't work the engine may not know to turn the fan on and the engine could overheat. Here's a tip. When you turn on your A/C or Heater, both fans come on. The A/C cooling fan and the Engine Cooling fan.


When your truck gets warm you hear a fan turn on what is that?

That is the fan cooling the liquid in the radiator to keep the engine from over heating.


Is heater fan the same as cooling fan?

No. The heater 'fan', more commonly known as the blower motor, is the one inside the vehicle cabin that pushes warm or cold air for the cabin heat or air conditioning. The cooling fan is the engine cooling fan under the hood.


On a Mazda 6 the engine cooling fan now runs all the time what is wrong?

Answermost likely it is the engine temp. sensor that tells the fan the motor is hot if it is going bad then it can make the fan run non stopI have the same problem in mazda6 2004 2.3l engine. If you have $100 you go to the dealer and get the update for compute unit, it is a bug in it. If you do not have money turn of the heater fan than engine is cold, as soon as engine warms up the fan will turn off.