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Heating fan only works on high

Postion 1 and 2 on fan control do not work, fan and heating work fine on postion 3

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  • Billy Jan 10, 2013

    thanks Allen, I have just bought the car and am not mechanically minded but I assume the fan is under the dash?



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  • 3 Answers

There is a resistor next to the fan that is more than likely the problem should be an easy fix

Posted on Jan 09, 2013


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SOURCE: blower fan

Sounds like the problem is more with the blower motor assembly itself. The blower motor have micro-proccers built itnto them which comunicate with the control heads and do the actual regulating of the fan motor. Dealers have computers with diagnostic software which allows them to monitor what is happening in the eletronic controls of the vehicle. Electronic diagnostics without the diagnostic software makes it very diffecult to pinpoint the actual item causing the problem.

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SOURCE: 2001 ford ranger windshield wiper delay not working

its the fuse inside the fusebox under the hood. the box is right in front of the battery. I had the same problem. 4 dollar part. look it up in the owners manuel and your good to go.

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SOURCE: camshaft postion sensor on bank 2

Should just be a simple remove and replace. Engine off disconnect sensor, remove sensor, install new and good to go (assuming the sensor is the problem to what ever issue you were having).

Posted on Apr 03, 2009

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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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SOURCE: Heater blower switch only works in postions 3 and 4

Heat limiting capacitor is blown on low side. Limits excessive heat to components. Three capacitors on one board. One is constant. One runs two lower speeds and other runs two higher speeds. Need to replace. Follow wire from blower motor back towards center of vehicle. The capacitor is approx. 1.5" X 2.5" and is mounted with two screws. Simply remove plug and two screws, pull out capacitor. Replace with new in reverse order. Did last year. Part was relatively cheap and easy to replace. You do have to be somewhat limber to fingers and tools under there.
Good luck.

Posted on Oct 02, 2009

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Hello first of all

well i am sorry a mechanic cant figure this out its really sad. ok so your problem is your either one of two things but most likely the first one i list.

1. camshaft postion sensor
2. crankshaft postion sensor

Now that being said it most likely the camshaft sensor the reason i say that is when a crankshaft postion sensor is bad the car has very hard starts and most of the time no start issues. When a camshaft postion sensor is bad the car cuts off whil driving and can be hard to start up again.

So that being said they are both pretty cheap parts i would go ahead and replace them both and i would bet my 5 years as ford mechanic that solves your issue.

The crank postion sensor is located behind the harmonic balancer pully or right beside it here is a picture from and description.

The crankshaft position sensor identifies position of the crankshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM).
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown.
  • Designed to meet or exceed OE specifications in form, fit and function.
  • Global coverage for import and/or domestic applications.

  • jamiesturm29_6.jpgAnd the camshaft sensor picture and info from below.

    The camshaft position sensor identifies position of the camshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM).
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown.
  • Designed to meet or exceed OE specifications in form, fit and function.
  • Global coverage for import and/or domestic applications.

  • jamiesturm29_7.jpg
    The crankshaft postion sensor is 22.99 and the cam is 19.99 so 50.00 bucks and about hours time should have you up and running.

    PS if this helps please 4 thumbs up it helps me continue to help on here thanks

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