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Fan speed switch

Only the high setting works.

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The problem will be in the fan resistor a small unit normally screwed into the heater case behind the glove box. The resistors that create the lower speeds will be burnt out leaving only the direct circuit for high fan

Posted on Dec 28, 2013

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Posted on Jan 02, 2017

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StormStrikes
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SOURCE: fan motor switch on 98 jeep cherokee only works on high

In many cases this is the result of the blower motor resistor having gone bad. They are often located in the housing that holds the blower motor but I cannot say 100% for sure with the Jeep Cherokee.

Posted on Dec 30, 2008

csmock132
  • 4669 Answers

SOURCE: Heater/AC blower will not operate

Replace the blower resistor.

Posted on Mar 03, 2009

  • 1 Answer

SOURCE: My blower motor fan speed switch will work only on High.

I had a similar problem with my 03 Taurus. Does your floorboard on the passenger side get wet when it rains really hard? If so, Ford is aware of a defect above the fan motor which is behind the glovebox.
I contacted Ford directly and they had my local ford dealer fix it free and they gave me money towards a new blower motor which shorted out from the leak, it's possible it just your switch if there is no leak but you might need both the switch and blower motor replaced like I did. Hope this helps.

Posted on Apr 14, 2009

shocktroop40
  • 155 Answers

SOURCE: 2002 Honda Odyssey fan only works at high speed. The A/C compress

Usually when the blower fan only operates on hi speed, its because of a failed blower motor resistor. You still have hi speed because on hi, the power going to the blower motor goes directly to it, as opposed to the lower speeds, when the power is routed through the resistor, thus lowering the voltage, which in turn lowers the speed of the fan. The resistor is usually located near the blower motor itself, under the hood back near the firewall.

Posted on Aug 15, 2009

  • 1 Answer

SOURCE: 04 Wrangler AC fan only works on high speed (position4).

Its the switch behind the fan nob thats not making contact, you have to pop the cover off the dash where the radio fan and other gizmos are. Then remove the fan nobs by pulling them straight off after that unscrew the housing unit inside is the switch. You must carefully pry this open so as not to break the plastic clips holding it together the switch thats fryed should just pop out easy replacement fan switch! If my mind serves me right it costs 40$ to replace if you order from chrysler.

Posted on Aug 28, 2009

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if you got heat on all speeds and the blower motor is working properly then you probably need a new HVAC switch.

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Check to see if you are getting voltage to the blower motor if you are the motor is bad if not check the fan speed switch. 1 2 3 or low medium high if you get voltage going to the switch but not from replace the switch if you have voltage from switch check the blower motor resistor the although with the blower resistor you commonly have a high fan speed in the max setting and the lower speed settings don't work wich would make you think 1 2 3 are not working but 4 is. That is why it is best to check all parts to make sure the part you do replace needed to be replaced

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Heater fan motoer only works on high setting?


many of the heater blowers use a resistor type switch to adjust the fan speeds, when the switch goes bad only the high speed will work. the resistor is usually located in the airflow in the heater box under the dash. find it , change it (it just plugs in) and it will work again

Jan 16, 2011 | 1993 Buick Century

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Fan switch only works on high


It is very likely that the blower motor resistor has burned out. The resistor uses several resistors to drop voltage which drops the fan speed. Since high speed requires no drop in resistance it bypasses all the resisitors. Since none of the lower speeds work I would belt that the resistor for the setting just under high speed has burned out out. since all the other lower speeds use that resistor. Sometimes they will also have a non-serviceable internal fuse that will blow.

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Heater & cooling fan only works on high.Power locks don't work.


there is a resistor for the heating and cooling fan speed. this controls the amount of voltage to your fan, which controls the speed. usually when the fan only works on high it will bypass the resistor and use the full 12 volts for the high setting. your power locks might be part of this circuit. i would check the resistor first then check the locks. usually the resistor is behind the high low switch

Mar 26, 2010 | 2000 Pontiac Montana

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THE A/C BLOWER MOTOR ONLY RUNS ON HIGH SPEED, THE


could be one of two problems either the switch for the fan motor or the motor itself u would need a 12volt test light to check ground one side light and touch the switch connector wires one by one until light comes on this is the main line then turn switch to the 1st speed u should get a light on another wire if switch is working repete for all speed selection if it works then the motor is bad

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fan blower speed switch under hood usually in fire wall or in heater box under dash area if you do not change it you will keep losing all your speeds until nothing left! it is not!!!!the one in your dash that you hand operate! hope this helps.John

Jan 24, 2009 | 2006 GMC Envoy

4 Answers

1998 GMC Sierra pickup truck cabin fan problem


Your blower moter is under your glovebox and very easy to replace.I dont think thats your ploblem.I would pull off the dash.It will snap right off without breaking anything.Then pull out the part that holds the selector switch for the fan speed.Then you unplug that switch.Clean the copper contacts.Plug it back in.If everything works again like it should and did in my truck then it is either that switch that is bad or the wiring harness.I would replace that switch.

Oct 20, 2008 | 1998 GMC Sierra

1 Answer

Vent fan only works when set to 4


Hi.....
On your Vehicle the problem for the FAN speed is NOT the FAN switch.
99.9 % of this problem on cars is the BLOWER MOTOR RESISTOR.
The blower motor resistor give the speed to the Fan.
But on High speed the switch make a By pass of the switch using a Relay for the high speed.
The Blower motor resistor, is located Beside of the Blower motor On the passanger compartment.

If you replace the blower motor resistor you have 99.9% of this will solve your problem.

I'm a Mechanic.

I hope this help on your problem.
Thank you for use fixya...

Oct 09, 2008 | 2003 Nissan Altima

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The Fan speed has stop working on all setting except high/


so your fan stopped working on all settings but high....? sounds like a bad switch...i know alot of jeeps and fords have that problem....lemme know....might hafat add another car to the broken fan switch list....lol

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