Question about 2009 Ford F-150

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Interior fan stays on high and won't slow down with switch

Fan stays on high even if dash switch shows one bar

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

emissionwiz
  • 75197 Answers

SOURCE: fan assembly and relays

You did something wrong, recheck those relays, bypass the relay at the relay socket, if the fans run then the relays may be wrong, are they factory relays?

Posted on Oct 19, 2008

  • 92 Answers

SOURCE: 2000 Ford F-250, Fan switch/ blower motor...

sounds like blower motor resistor is shot.

Posted on Oct 26, 2008

Testimonial: "Good call. That did it. Thanks "

egadgetguy
  • 258 Answers

SOURCE: 1996 Ranger 2wd interior fan blows hi spd only

Possible solution is to check the fan speed switch. These go bad and won't change the speed/ or function in the lower speeds.

Posted on Dec 29, 2009

  • 135 Answers

SOURCE: just bought a used 2004

MOST LIKELY CAUSE IS STICKING DOOR AJAR SWITCH SPRAYING WD40 INTO DOOR LATCH AND SHUTTING AND OPENING DOOR SEVERAL TIMES TAKES CARE OF THE PROBLEM .. THIS A VERY COMMON PROBLEM SPRAY ALL DOOR LOCKS THROUGHLY

HOPR THIS HELPS

Posted on Aug 08, 2010

  • 153 Answers

SOURCE: The heater/air conditioning fan has stopped

this sounds as if you heater fan rheostat has packed up, it's a separate unit that is normally located by the heater motor fan

Posted on Oct 05, 2010

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1 Answer

Is ask a question about a 1993 Chevy s10 truck AC blower motor when I bypass the relay the fan motor comes on full speed and a dash which will not slow down or speed it up or even turn it on


CHECK UNDER THE DASH ON THE PASSENGER SIDE AND FIND THE FAN MOTOR, THERE SHOULD BE A

Blower Motor Resistor WITH PLUG ON IT, IT SHOULD BE HELD ON WITH 2 SCREWS. THIS IS THE SWITCH THAT CONTROLS FAN SPEED.

Jan 13, 2016 | AC Cars & Trucks

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Have a 2009 Nissan Quest I can't turn the heat off. Just stays on a high level of blowing out heat .


If you have a fan that has different speed settings (1234, or low med high etc) and the only one that works is high - then the blower resistor pack has failed. If you have a climate control unit (where you just pick a temp you want) then the fan is controlled by the heating system and it sets fan speed. If you have climate control style try lowering the temp to a lower setting (current temp in vehicle) and see if fan slows down. If not then climate control unit or fan resistor bad. If dial type and you get nothing on lower settings (only high works like mentioned above) you need to change blower resistor. It is located under dash near the fan itself. Look for small unit bolted in duct near fan with wire plug going to it.

Feb 23, 2015 | Nissan Cars & Trucks

1 Answer

On a 2007 lincoln navigator the a/c fan motor will not shut off. the fan adjustment bars are showing slower but still the fan is on high


The fan speed reostat is broken or the switch itself is bad. Try replacing the switch first because the motor speed reostat is part of the motor itself. $$$

Aug 30, 2014 | 2007 Lincoln Navigator Luxury

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2004 Chevy Impala~no interior lights~dash lights work~all fuses look OK~trunk light works. At a loss of what else to do~please help! Ladt night the blower fan decidedto stay on ALL the time~Even after the...


Sounds like the light blew out. And the fan could just be the radiator fan which will stay on even with the car off and keys out. It has to cool the coolant and engine. Usually happens in warmer weather.

Jun 21, 2014 | Cars & Trucks

1 Answer

My 2005 nissan maxima fan will not turn off, except when the engine is turned off. The fan stays on high even when the control panel is off. Is there a reset or something simple to look for. Thanks!


if you mean the interior blower motor fan then its a problem with the resistor pack but i have no experiance of knowing where this is ,most modern vehicles are on the blower motor itself but it could have it anywhere or be a faulty switch ,sorry no idea without a look ,once i have a look then i work it out from their but answering a qustion like this blind with havinbg done one myself i cannot be of any further help ,with my head stuck under the dash i would know straight away but from afar ??

Mar 08, 2014 | Nissan Cars & Trucks

1 Answer

1996 Ford contour engine cooling fan comes on high about a minute after starting car and wont turn off or slow down.


Well it could be a problem with the fan relay, or it could be a safety feature of the computer.
if the computer finds a problem with the cooling fan or the engine temp sensor, it will turn on the fan to try to prevent overheating. Even if the engine is cold.
If the check engine light is not staying on, I would check the fan relay for power and ground.

Feb 13, 2013 | 1996 Ford Contour

1 Answer

Radiator fan relays


You need a book. The fans come on when the pressure switch sends a signal to the BCM to energize the fan relays. If the freon charge is low the ac system won't build up enough high pressure to activate the fans. If the pressure switch is bad the computer won't know the pressure is high enough to need the fans. And so on.

Jun 23, 2012 | 2009 Ford Flex

4 Answers

The interior blower will not turn off even when


SOUND LIKE BLOWER MOTOR RELAY DEFECTIVE.

Jun 24, 2010 | 2004 Pontiac Grand Prix

1 Answer

2001 Chev Cavalier blower fan intermittent


The power connection to the fan motor on these is known to overheat and cause a bad connection.The fan motor is above the passengers feet.Next time the fan motor will not come on, switch the selector to high and wack the bottom of the dash above the passengers feet.If the motor does come on at that time,you may need a replacement fan motor and connector.REPLACE the fan speed resistor board when replacing the fan motor,which is right behind the fan motor.

Apr 28, 2017 | 2001 Chevrolet Cavalier

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