Question about 1999 Volkswagen Jetta

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When turning off engine , both fans , radiator and ac fans continue to run causing my battery to drain

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Change the temp sensor on coolant system I am sure thets the cause.hope it helps

Posted on May 21, 2011

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Even with a fully charged battery i need to use a battery pack to start the van when it does start the cooling van comes on for a minute then goes off and that continues


Check rear AC in van and turn it off. Most vans have dual AC. Even if the front AC is off, the rear is still usually on and some vehicles have the cooling fan and condenser fan run together to help with cooling. Check relay and fuse also.

Jun 10, 2017 | Cars & Trucks

1 Answer

Our Regal's a/c fan was stuck turned on, even w/ the ignition turned off. Draining the battery to dead. My wife took it to a Buick dealer who's only solution at that time was to pull the fuse out. So...


the radiator fans use a fuse,relay,temperature sensor which the computer controls to turn on the fans at the specified temperature.you don`t say if this problem occurred when the blower motor fan fuse was removed.it is not uncommon for the rad cooling fans to seize and not work,the blower motor uses an electronic resistor block on the air box under the hood with i think about 6 wires in the plug and is about 3.5"long and 1"wide.held by 2 bolts(screws).this is feed power all the time and when the control switch is turned for different fan speeds the switch grounds the circuit.at times the resistor shorts causing the fan to run continually.i think you need a new resistor to fix this problem.

Apr 01, 2011 | 1997 Buick.5 Regal

3 Answers

When i turn off the car the fan continues to run?


Many cars have this feature. The fan will run for a few minutes at a time until the coolant in the radiator drops below a certain temperature. Most vehicles with this feature will have a warning label on the radiator shroud indicating that the fan may start without warning when the engine or radiator is still hot. The only time you would need to be concerned would be if the fan continues to run without turning itself off, and causing the battery to be drained.

Feb 19, 2011 | 2003 Jaguar X-Type

1 Answer

Dashboard overheat warning light blinks continuously after 5-mi


It is not the thermostat since it only overheat on stop n go situation. Most likely cause is a bad radiator fan. Turn on the AC and see if both the radiator, and the condenser fan works. They should both be working when the AC is turned on. Lets stick to this for now. Let me know what happened. I don't want to confuse you with too many possiblity.

Nov 14, 2009 | 1998 Volkswagen Jetta

1 Answer

Fan continues to run while car is off


Usually on most vehicles the coolant temperature sensor sends info to the ecm which then determines when to turn your fan on and off, when you turn the car off the fan may continue to run until the engine reaches a cooler temperature, if the front radiator grill is'nt getting proper air flow to cool the coolant down check the radiator grill for damage or debris build up, if the car has problems over heating check the entire cooling system.

Mar 24, 2009 | 1992 Honda Accord

1 Answer

Cooling fan not working properly


Look at the fan radiator switch
Try unplug the CTS,if you see the radiator working continuously
Than the CTS, than change it

Jul 08, 2017 | 2005 Mitsubishi Endeavor

2 Answers

Electric fans runs after car is shut off, drains battery


Having the fan run on for a bit after the engine has stopped is not abnormal in itself, but 20 minutes sounds excessive.

If the fan does eventually shut off, I'd consider changing the thermoswitch (this is a sensor screwed into the radiator somewhere near the bottom, with a pair of wires connected to it - to change it, you'll need to drain the cooling system).

If the fan stays on continuously until the battery is completely flat, see what happens when you unplug the wires from the thermoswitch. If this stops the fan, you need to replace the thermoswitch. If it doesn't, then you need to examine the wiring associated with the switch and the fan, looking for damaged insulation.

A.

Nov 28, 2008 | 1999 Volkswagen Passat

1 Answer

1990 jeep cherokee 6cyl inline- electric radiator fan inop.


the aux fan only works when the ac is on, and has come to a predetermined temp(?) i found this out while going up a long grade in the back country without the ac on and later found out the radiator was half plugged!

Nov 18, 2008 | 1990 Jeep Cherokee Limited

1 Answer

Radiator Fans


You may have air trapped in the cooling system, this causes a hot spot and the fans run, This is a common issue on most front wheel cars, jack the front of the car up as high as you can, fill the coolant reservoir full, run the engine until hot,( don't overheat it) then shut down, let the engine cool, this should self bleed the air, refill the coolant bottle and retest for your problem, restore the wiring, the not running fan is for AC. Spray cold water from a hose on the radiator his will help get the air out after the shut down.

Oct 15, 2008 | 1998 Mazda Protege

2 Answers

Radiator Fan continuously running with engine off, discharging battery


It is not the fault: for long time Renault has that concept, that is to prevent engine oveheating when coolant circulation is suddenly stopped.

Radiator fan can continue to work up to 10 minutes after engine is off. You should worry about it only if it wouldn't stop even after 10 minutes.

Oct 12, 2008 | 2000 Renault 181

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