Question about 2005 Ford Taurus

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What would cause the radiator fan not turn on?

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The radiator fan will not turn if the motor is bad, if the temperature switch/sensor is bad, if a fuse is blown, or if the wiring has a break. To narrow it down, it will be easiest if you get a wiring schematic from the library or a repair manual. You will need to check for voltage at different points to determine the defective part.

Posted on Aug 03, 2010

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Posted on Jan 02, 2017

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2 Answers

Car is overheating even though the fan is connected directly.


can you turn the fan easily when the engine is off ?
if the answer is yes, you have a viscous fan hub ( fan clutch) and it is in need of replacing
the fan will spin but has no direct drive to pull the air through the radiator
if the fan is bolted directly to the water pump shaft hub, the I suggest that you start with a compression test, then a coolant system pressure test , followed by a radiator flow test to check for blocked cores

Oct 30, 2015 | Cars & Trucks

1 Answer

2004 honda civic...smell antifreeze ...cooling fans will not turn on


the main problem would be your radiator fans don't turn on. This would cause pressure to build in your radiator causing coolant to flow over into the coolant reservoir. sometimes you might see coolant on the floor your temp gauge should also read much higher than normal. you can connect your fans directly to your battery and drive the vehicle and see if problem still exists. if not then thermo switch etc would need to be checked.

Oct 04, 2014 | 2004 Honda Civic

1 Answer

Overheating


bad thermostat, electric fan if equipped not working, clogged radiator, clutch fan if equipped slipping (when turning fan blade by hand it should have a slight "resistance" to it...it should not turn freely with no resistance...fan belt slipping?...radiator cap bad?...

Nov 27, 2013 | 1963 Peugeot 404

1 Answer

1999 Jeep Cherokee Sport wont shift into overdrive P1491


P1491 - Radiator Fan Control Relay Circuit Open Or Shorted

When monitored: with the ignition key on, battery voltage greater than 10.0 volts and
the pcm requests the radiator fan to be turned on.
Set condition: an open or shorted circuit is detected in the radiator fan relay control
circuit.

Possible causes
radiator fan ctrl rly circuit wire harn intermittent defect
radiator fan ctrl rly circuit wire harn observable defect
radiator fan relay ground circuit open
rad fan relay control circuit open
radiator fan relay control circuit short to ground
rad fan control relay defective
pcm defective

Check ot and keep us updared.

Oct 15, 2011 | 1999 Jeep Cherokee

1 Answer

1998 Toyota Corolla radiator heats up (gauge goes full) every time I turn on the AC Fan for 5 to 10 minutes. This is happening with or without AC on. This model has Fan seperate from AC which gets turned...


Most overheating problems are caused by a stuck closed thermostat, if it has already been replaced the next common cause is a clogged radiator, have it checked at a REAPIR SHOP OR RADIATOR SHOP IF YOU REMOVE IT YOURSELF

Apr 03, 2017 | 1998 Toyota Corolla

1 Answer

My 2005 Dodge Ram 3.7 keeps overheating in city, or ''stop and go'' driving. It goes to normal temp when I am on the highway at a consistant speed.


In stop and go traffic will normally cause a car/truck to heat up more using the a/c. The most common cause is low coolant in radiator or a sticking thermostat. Check the coolant in radiator and check the front of radiator for any restriction to the air fins on radiator causing a blockage to keep the air from cooling the radiator. Check the clutch fan when cold by turning it by hand, if it turns free it will be ok. If you had run the truck and the coolant is hot try turning the fan by hand and if it turns free at that point the fan will be no good. Replace the fan. Hope this will help you.

Jun 02, 2010 | 2005 Dodge Ram 1500

1 Answer

Cooling fan direction??


Yes, Massive air flow from the first fan is causing air to be brought in from not only the front of the radiator but from the fan right next to it causing reverse air flow through the fan. This intern can cause less dirrect airflow through the radiator. Also, the recirculation of hot air (from the first fan) into the second fan, across the radiator and back to the first fan can cause the vehicle to run hotter. Wile the car is moving there is enough air pressure from the outside of the vehicle to flow directly through the radiator with little fan assistance needed. If you have the engine running and and turn on the a/c, you should hear the fan change speed or even see the second one turn on (If the fan is working), there is no delay. You might have a bad relay and good fan, as there is a separate relay that activates this same fan for the a/c.

Feb 17, 2009 | 1998 Cadillac Seville

2 Answers

Overheating


Hi,

Most normal causes for overheating would be:
  • clogged radiator,
  • insufficient coolant level (radiator and reservoir);
  • too soft radiator hoses;
  • defective/leaky water pump (impeller);
  • water pump belt/tensioner;
  • thermostat (mechanical);
  • thermal switch;
  • radiator fan, fan clutch;
  • fan relay;
  • fan fuse.
In some instances, the fan only works in conjunction with the A/C and/or heater and therefore would only work if either of those two are enabled.

Should your particular vehicle be using a radiator fan with clutch, that could also cause the fan blades not to spin even if the fan motor is turning.

Pls check the above mentioned components.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Aug 02, 2008 | 1995 Kia Sephia

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