Question about Nissan Altima

1 Answer

Fans do not come on when engine is running but they do when the air conditioner is turned on why?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 958 Answers

Is your engine temperature already high?...as you start the engine cold, these fans wont run right away. it will wait for the engine to get hot before it runs.
normally as the needle reaches the halfway mark, it should run by then.

wait for about 20 mins idling or untill the needle just pass the middle mark.


if the needle is past halway and almost 3/4 already, then you have a problem.

tnx 4 using fixya...

i hope i fix ur problem...

drcool

Posted on Aug 05, 2008

3 Suggested Answers

  • 255 Answers

SOURCE: 1997 Chevrolet Cavalier 4 door base coupe

Hi, you should start by checking your temperature suith at the cilinder head and the fan relay , those are the must comon for the problem you describe, ( be sure you chech all the fuses)GOOD LUCK......

Posted on Aug 15, 2008

emissionwiz
  • 60960 Answers

SOURCE: cooling fan not working

The fans only run when the engine reaches approxminatly 235 degrees F. on the guage that is near the end of scale just before guage show "HOT" I don't think you have a problem, allot of folks out there don't know about this.

Posted on Aug 22, 2008

  • 109 Answers

SOURCE: When I turn my air conditioner on, nothing happens

have you tried adding freon??

Posted on Jun 18, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

The radiator fans stopped working on my 1993 colt vista. what is the problem?


Unless you are in a very hot climate, with no air con working the radiator fan does not normally come on.

Sep 29, 2014 | 1993 Plymouth Colt Vista

1 Answer

I have ford mustang 1999 when i start my car and


there will be a cooling fan in front of the condenser ( ac unit in front of the radiator) that should be running as soon as you turn the ac on. If that is not working then the head pressures for the compressor become excessive and to save the compressor from damage it is shut of at the clutch at the pulley. When you are moving there is air flow through the condenser and so the head pressures are maintained at the correct level. Have it checked out by an accredited auto ac specialist . If you have a viscous fan hub on the engine fan the consider replacing it as it is not pulling air through the radiator when idling

Sep 28, 2014 | Cars & Trucks

1 Answer

Peugeot 207 fan assembly not working


sound like engine coolant temperature sensor faulty also coolant level too low.

May 27, 2013 | Cars & Trucks

1 Answer

Water is over heating when air conditioner is running. Temp is fine when air conditioner is off. Changed radiator fluid and thermostat. Fan is running and water pump seems to be ok.


My suspicion is that the fans may be coming on but they are not picking up speed when you turn on the A/C. Your car would have some of relay to control the speed of the fan whenever the A/C was turned on. This relay system would also increase the speed at which the fans run when the engine heat turns them on too.

Try starting the car cold and turning on the A/C right. Even though the engine is cold the rad fan should start up when you switch on the A/C. Once the engine gets hot the fan speed should increase accordingly when you switch on the A/C.

I'm not familiar with how Chrysler makes this work so I'm unsure what to repair but this is most likely your problem. Hope this helps.

Aug 14, 2011 | Chrysler PT Cruiser Cars & Trucks

3 Answers

Air conditioner fan runs all the time. Turn on key the fan starts. Car is not hot, has been sitting overnight Question how to turn off so it only works with the AC


I would suspect a stuck cooling fan relay. Your going to have to locate the malfunction to get the operation that you seek. Reference owners manual for lcoation of the cooling fan relay and try switching it out.

Feb 18, 2011 | 1998 Chevrolet Tracker

1 Answer

Fan for Air Conditioner


You have a fan temp sensor located on the engine block that controls when fan turns on or off.

Jun 19, 2009 | 2000 Nissan Xterra

1 Answer

Heater problem


is your heater set on defrost this will cause your engine fan to run because it turns on the compressor for air conditioner this helps to extract moisture from your warm air defrost  and the fan in the engine compartment helps keep it the engine cool from the extra load on the engine this is normal 

Feb 17, 2009 | 2003 Hyundai Santa Fe

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

128 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

60960 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

705 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...