Question about 1999 Toyota Camry

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My fan keeps coming on after my car turns off and draining my battery and the car is not hot. how do i get the fan to satay off

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The fan runs on a temperature sensor and operates according to engine temperature.(even with the engine off).I would suggest this is faulty.To locate this trace the wires from the fan

Posted on Mar 07, 2009


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1 Answer

Fan wont turn off and drains the battery

replace temperature sensor first ,but usually fans come on only when a car is over heating , maybe replace fan relays maybe sticking .

Mar 28, 2014 | 1998 Ford Taurus

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When I turn the engine off the main radiator fan keeps running and is draining the battery. Why?

well the electric fan will turn on and off at any time. when you stop your vehicle and the fan continues to run what is happening is the temp sensor says the motor is still too hot and it needs more cooling. now as it reaches the cooling temp it is also suppose to shut it down. have the sensors checked.

Jan 11, 2011 | 2000 Jeep Grand Cherokee

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Fan keeps coming on after engine turned off

Most cars with electric cooling fans incorporate a feature that will turn on the fan after the engine has been turned off until the radiator has cooled down. If it keeps coming on after cool down and is draining your battery, then you need to replace the switch that controls the fan.

Jan 10, 2011 | 2006 Mini Cooper

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Fan doesn't run while in idle and begins to over heat until I start driving agin then it cools back down to normal. Also the fan runs when engine is off and drains the battery.

The fan is only supposed to come on when there is excess heat .. in normal driving conditions it doesn't start. When you start your car in the morning the fan won't come on because the engine is cold.

With a hot engine - and it depends how hot the engine is - the fan will only kick in to prevent overheating. In heavy slow moving traffic or a traffic jam, the fan will kick in if needed.

The air flow through the radiator is usually sufficient -in normal driving conditions - to cool the engine.

When you park up and the car has a hot engine, the fan will kick in. This is perfectly normal. It is caused by a surge of hot coolant triggering the fan sensor. Perfectly normal.

The fan then should cut out after a while .. maybe 2-3 minutes at the most. If the fan runs continuously that suggests a fault in the temperature sensor switch.

Next time - wait by the car and see how long it takes for the fan to quit after you have parked up. It should stop of its own accord after a couple of minutes.

If the fan cuts off after a short while, and your battery is becoming drained, that's probably a battery or alternator fault.

Remember: when you start the car the fan won't kick in at idle speed because the engine is COLD, and there is no reason for the fan to start up ..
The fan WILL kick in for a couple of minutes after you have parked the vehicle and the engine is hot

Aug 14, 2010 | 1999 Jeep Grand Cherokee

1 Answer

1996 Vw Passat GLS 2.8L; When I turn the engine off the fan keeps running and is draning the battery? What needs to be looked at?

The fan should still run if the engine is very hot,even after most cars are switched off. The battery may be on its last legs.Try this test, before you switch off the engine,put your heaters on full speed,open your windows if you cant stand the heat lol.This should help cool the engine and help shorten the time your engine fan needs to run to bring down the temp. If the battery is still draining,the alternator may be the culprit. This can be tested with a multi-meter.

Jul 04, 2010 | 1995 Volkswagen Passat

2 Answers

Fan not turning off when i turn off truck

Check the Computer's Thermostatic Fan Relay.If that's not it replace the Fan's Sensor.

Jun 15, 2009 | 2002 Dodge Dakota Club Cab

2 Answers

2001 Volvo s-40 cooling fan comes on after the key is turned off. all the time. (even when COLD) ????

its normal for it to come on when its hot, but if it dose come on when its cold i wouldnt worry about it, if it dose bother you take it to a garage i sure they will say the same as i have,

Jun 05, 2009 | 2002 Volvo S60

2 Answers

I have a problem with my Mazda xedos 1995. The car keeps overheating and the fan does not kick in. Does anybody have any advise on how to check the fan and how to get it started again. Thanks in advance

Remove the fan sender unit wire which should be around the cylinder head the best way to locate it is to go by the wiring frm the fan to the sender unit.
Ones found , switch 'on' the igntion and then pull the wire from the sender unit , the fan should come 'on' there. if not thn the fan could have gone, probabely it could be the brushes inside, the best way to do is to replace the complete fan assy.

You can also check the fan by disconnecting the wires from around where its fitted there must be a connector, remove the connection and get two wires and connect it to the fan wiring and the others to the live and negative if the battery, the fan , if it' s ok should roar here, if the fans ok then the sender unit maybe faulty, you will have to replace it.
Good Luck.


May 06, 2009 | 1996 Mazda Millenia

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