Question about 3Com Fan tray - for Switch 4050 / 4060

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Cooling fan runs continuasly even with ignition is no switched on

2002 406 estate

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  • gtdukltd Jun 26, 2008

    Thanks for your help, apparently there was a short in the Electrcs in the pasangers footwell!. Keep up the good work! If I ever nead to I will us your services again. Thanks again. gtdukltd

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Even when the key is off with the engine cool after a few minutes? Or just a few minutes after it is turned off with the key?

Check or change your thermostat and flush the radiator with the heater running on hot as it can be. Can you see inside the radiator? If you can is the water flowing good? If it is not after you change you thermostat and it still runs hot then it is your water pump. Is it running hot?

Please answer the questions before you rate this.

Posted on Jun 22, 2008

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1 Answer

Radiator fan runs after ignition is off and key is removed


Does the fan motor shut off after a time or does it run your battery down?

If it runs for a time and shuts off, this is normal with a lot of cars today. It is a second stage cooling system that keeps cooling even after the motor is turned off. They all have either a temperature control or timer switch that turn them off.

If the motor runs till your battery is discharged then the temperature or timer control switch has gone bad and needs to be replaced.

Should you find that your car is overheating while in town, then the fan motor or sensor switch are usually what is at fault and will need to be evaluated and replaced accordingly.

Dec 27, 2013 | 2007 Jaguar X-Type 3.0 Sedan

2 Answers

Cooling fan keeps running after engine turned off on a 1996 ef ford falcon


Some fans do keep running after engine is switched off for a short period of time (up to 5 minutes) Check with a service person (ford) to see if that is the case or if you have a faulty sensor.

Apr 06, 2013 | Cars & Trucks

2 Answers

Why does my fan keep running in my 2003 Volvo S 60 after the car is off?


It can be faulty fan relay.The relay is not turning the system off.Or its wire short issue.Even with ignition off ,the fan relay is getting power so its not letting the fan to turn off.Bypass the fan control relay and see if still the fan works with ignition off or not.

For more troubleshooting check the link below:------

Cooling Fan Stays ON with Ignition Off?

http://whatisbyme.blogspot.in/2012/07/cooling-fan-stays-on-with-ignition-off.html
--------------

Cooling fan relays location ?

http://technoanswers.blogspot.in/2012/02/cooling-fan-relays-location-on-1998.html
------------

DIC says "COOLING FAN FAULT"?

http://schematicsdiagram.blogspot.com/2011/12/dic-says-cooling-fan-fault.html
----------

Heater fan and headlights will not turn off with ignition off?


http://technoanswers.blogspot.com/2012/01/heater-fan-and-headlights-will-not-turn.html


-----------

Fuel pump relay and cooling fan relay troubleshooting ?

http://repairhelpcenter.blogspot.com/2011/10/fuel-pump-relay-and-cooling-fan-relay.html

-------------

Where Is Radiator Fan relay and Fuse Located?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radiator-fan-relay-and-fuse.html

------------
These will help.
Thanks.

Nov 28, 2012 | Volvo S60 Cars & Trucks

1 Answer

My cooling fan has no power even when wired directly to ignition.


you can test ur fan with running" leads" or wires. a + and- from fuse box straight to fan wires, putting a on and off switch in between. its to check is fried or not. switch in line really not needed but it works

Feb 22, 2012 | 1999 Jeep Grand Cherokee

2 Answers

Why there are 02 fans near radiator? What are the purposes? One is working and one is not.


Hi and welcome to FixYa I am Kelly.
You have 2 fans because one is the temperature controlled radiator fan that only runs when the engine water temp is above 160 deg. F. The water termperature controlled fan can run even with the ignition key OFF should the Engine water temp be too hot.
The 2nd fan is for your Air-Conditioner that should run when the cabin temp is set low enough for the Air-Conditioner compressor to run. This fan should run anytime the Air-Conditoner is switched on.
If your experiencing engine over heat problems when driving slow or sitting idle most likely the fan switch that is switched on by water temperature has failed. The fan switch controls a fan relay and if the relay fails the fan will not run. In this particular model there is a cooling fan module that controls the fan.

Read this link but DO NOT click on any links from that webpage: (They do not work)
http://www.fixautopartz.com/2009/03/20/2003-mitsubishi-outlander-engine-cooling-system

Thanks for choosing FixYa,
Kelly

Apr 09, 2011 | 2003 Mitsubishi Outlander

2 Answers

1991 honda accord lx cooling fan


Some vehicles have sensors that can control the electric fan with the ignition off to keep the heat buildup that naturally occurs right after turning off the engine. This can prevent hard starting that can happen with a hot engine. If it is doing this an abnormal amount, the sensor that is operable with the ignition off may be failing. Before turning off the ignition, check to see if the engine temperature is pushing the 'red zone;' if it is, then the fan operation may be normal but your engine may be running hot.

Feb 05, 2010 | 1991 Honda Accord

1 Answer

My 2000 Camaro cooling fan runs continuously even with the ignition switch off.


Your most likely cause is a sticking relay or a short to power. Don't discount the fact that the short to power can occur inside of the electric fan motor!

Nov 13, 2009 | 2000 Chevrolet Camaro

1 Answer

Cooling fan will not run


CHECK FUSES /FUSIBLE LINKS IF THEY ARE GOOD RUN THE ENGINE UNTILL NORMAL OPERATING TEMPERTURE IS REACHED , THEN ALLOW IT TO IDLE . IF THE FAN DOES NOT CUT IN WITHIN A FEW MINUTES ,OR BEFORE THE TEMPERATURE GAUGE APPROACHES THE 110 MARK OR THE RED END OF THE SCALE ,SWITCH OFF THE IGNITION AND DISCONNECT THE WIRING PLUG FROM THE COOLING FAN SWITCH , BRIDGE THE RELEVANT TWO CONTACTS IN THE WIRING PLUG USING A LENGHT OF SPARE WIRE AND SWITCH ON THE IGNITION . IF THE FAN NOW OPERATES , THE SWITCH IS PROBABLY FAULTY AND SHUD BE RENEWED.

Oct 24, 2009 | 1991 Volkswagen GTI

3 Answers

Porsche 944 electric fan keeps running even when ignition is turned off


Replace the cooling fan relay, another person had the same issue, that's waht it was.

Oct 07, 2008 | 1989 Porsche 944

1 Answer

RAD FAN KEEPS ON EVEN THOUGH THE ENGINE IS SWITCH OFF &IGNITION IS OFF.


That's standard from the factory. The rad fan still keep on running until the engine cooled near the normal temps

Jul 10, 2008 | 1997 Honda Accord

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