Question about 2001 Nissan Altima

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Whay does my radiator fan stay on whaen i turn the car off

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What could be wrong if the fan does not stay on after key is turned off. I know it needs to stay on to cool the motor

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Doors on car automatically locked while key was in ignition. Car is a 2001 Nissan Altima.

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It stays on to continue cooling the contents of the radiator, which remain hot even after you turn your car off. When the coolant is cooled, the fan will turn off.

Posted on Aug 07, 2010

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1 Answer

Why does my radiator fan stay on?


radiator overheating replace radiator cap

Jan 26, 2016 | 1994 Plymouth Voyager

1 Answer

Fan keeps running after car is turned off? Sensor or relay problem??


Some cars are designed to have the fan run for a few minutes after you turn the car off. But if doesn't stop until the battery drains, then it might be a faulty switch or temperature sensor.

Or, if the fan stays running when the engine and radiator are cool you have a very cheap problem: The fan thermostat is stuck closed. A new thermostat will fix the problem--the hardest part of replacing it is finding it. Follow the wires from the fan to the switch--it is usually on the bottom tank of the radiator. Drain the radiator first and save the coolant to put back in after you replace the thermostat. NEVER OPEN A HOT RADIATOR.

If that wasn't it then check the following:
  • Check to see that your coolant level is correct. Top up as necessary.
  • Lay your hand on the radiator (with the engine off) and feel if it is as hot at the top as it is at the bottom. If not, your radiator may be clogged and need flushed or replaced. (Flushing is cheap. Replacing the radiator isn't)
  • Do you get heat from the heater? Leave it turned on high and see if your fan stays running the next time. If it takes care of the problem that could mean you have a kinked radiator hose.

Hope this helped (remember comment and rated this).

Mar 24, 2011 | 2003 Audi A4 Cabriolet

1 Answer

1998 Pontiac Sunfire Symptoms: -Overheating


What are you going by to say it's overheating , temp gauge ? Have you test to see what the actual temp. is > Hook - up a scan tool ,what's the PCM - engine computer seeing for engine temp. ? 223 degress the PCM should turn on the cooling fan . You could buy a Non-Contact Infrared Thermometer With Laser Targeting at harbor freight ! Radiator very hot ????? What is the right temp .
Non Contact Infrared Thermometer With Laser Targeting

Could be a bad temp gauge . Is the coolant surging inside the cooling system ? Does it have a radiator cap ? Have you replaced it ?

May 06, 2017 | 1998 Pontiac Sunfire

1 Answer

Fan blower stays on after i shut car off i unplug the wire for it so it does shut off and when i need air i plug it back it and my radio stays on after i shut car off and take key out...my radio is...


Some cars are designed to have the fan run for a few minutes after you turn the car off. But if doesn't stop until the battery drains, then it might be a faulty switch or temperature sensor.

Or, if the fan stays running when the engine and radiator are cool you have a very cheap problem: The fan thermostat is stuck closed. A new thermostat will fix the problem--the hardest part of replacing it is finding it. Follow the wires from the fan to the switch--it is usually on the bottom tank of the radiator. Drain the radiator first and save the coolant to put back in after you replace the thermostat. NEVER OPEN A HOT RADIATOR.

If that wasn't it then check the following:
  • Check to see that your coolant level is correct. Top up as necessary.
  • Lay your hand on the radiator (with the engine off) and feel if it is as hot at the top as it is at the bottom. If not, your radiator may be clogged and need flushed or replaced. (Flushing is cheap. Replacing the radiator isn't)
  • Do you get heat from the heater? Leave it turned on high and see if your fan stays running the next time. If it takes care of the problem that could mean you have a kinked radiator hose.

Hope this helped (remember comment and rated this).

May 05, 2010 | 2005 Chevrolet Impala

2 Answers

Radiator Fan Stays On


A simple test would involve disconnecting the fan switch while the fan is on. If the fan then stops the switch has failed. If the fan continues to run remove the relay , if the fan then stops the relay has failed.
Various inputs/outputs at the relay should be confirmed to be 100% certain something strange isn't going on.
Above all be careful of the fan itself , if it's running obviously but if it's not it could start during repair

Mar 01, 2010 | 2001 Buick LeSabre

1 Answer

Radiator coolant fan


Some car designs only have one radiator fan as opposed to 2 fans. Typically the second smaller fan is specifically for the AC when its turned on. But with the larger single fan design, its turns on when the AC is on regardless. Now if the fan doesnt come on at all at any other time... like to prevent the car from overheating, you may want to check the Engine Coolant Temperature Sensor. Its located on the engine and easy to replace. Can be tricky to find. They only run 20 bucks thankfully.

May 17, 2009 | 2000 Oldsmobile Alero

1 Answer

Thermo fan on radiator wont turn off


It wont hurt anything if they stay on all the time cus the fan will mostly runs off your alternator. But if does bother you then it meant be the sensor on the fan. Or you can install a switch to turn the fun off and on with a toggle switch. But its up to you. But for the most part as long as the fan keeps going to cool off your radiator you should be ok. But i am thinking it maybe the sensor not telling the fan to shut off and turn on when its suppose to.

May 04, 2009 | 1991 Toyota Camry

1 Answer

05 dodge neon cooling fan is loud. stays on after turning car off


If you haven't made any recent changes then I would first check your coolant levels make sure you have sufficient enough coolant in radiator and in the reservoir if the problem still exist check your thermostat make sure it is opening and closing if it is have your radiator pressure checked at local radiator repair facility... wutxtye0rjd9d9ekmodqt1eoxkvn9hr9qjz1l3dabggyud7sdgr36czsrfxqenadhnijx9nfayi+sz1sug0aaaaasuvork5cyii=

Apr 24, 2009 | 2005 Dodge Neon

1 Answer

Trying to find fusable link for radiator fan relays on1988 nissan


if you can not find the link your bestbet is to go to a junk yard and pick up the wiering harnesfor the fan. bring a tester that will give you a digatol read out tester with you. thear is no garente that the first one thay give you will worke. this whay you will know before you pay for it.

Mar 18, 2009 | 1988 Nissan Sentra 2 Door

1 Answer

Fan cooling system of an engine v.w


A thermal switch controls the radiator fan and if the temperature of your radiator is above a preset temperature value, the thermal switch will close and the fan will turn on and will stay on even after you turn the motor off, until your radiator temperature cools down. I wouldn't worry about.

Jun 11, 2008 | 1996 Volkswagen Jetta

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