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Interior fan speeds (confirming fix)

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Old Nov 6, 2012 | 10:06 PM
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hallfleming's Avatar
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Default Interior fan speeds (confirming fix)

Sometimes when I set the fan speed to lets say 2 or 3, the fan motor sounds as if it goes higher like all the way to 5. If I wiggle the fan **** slightly or change to another setting and back, it will calm down back to the correct speed. I would suspect the actual switch but most people mention the Blower Motor Resistor failing and causing fan speed issues. Does that sound correct? Just wanted confirmation before I drop $126 on a resistor I bet no one wants returned...

Thanks!
 
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Old Nov 7, 2012 | 07:37 AM
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ala_xfire's Avatar
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From: Lineville, AL
Default Re: Interior fan speeds (confirming fix)

Originally Posted by hallfleming
Sometimes when I set the fan speed to lets say 2 or 3, the fan motor sounds as if it goes higher like all the way to 5. If I wiggle the fan **** slightly or change to another setting and back, it will calm down back to the correct speed. I would suspect the actual switch but most people mention the Blower Motor Resistor failing and causing fan speed issues. Does that sound correct? Just wanted confirmation before I drop $126 on a resistor I bet no one wants returned...

Thanks!
My money is on the control assembly / switch.
( If you DO replace the unit, keep in mind that graphiteghost is trying very hard to get his hands on a defective unit )

There are several under $50 on Car-Part.com--Used Auto Parts Market

 
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Old Nov 7, 2012 | 07:49 AM
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hallfleming's Avatar
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Default Re: Interior fan speeds (confirming fix)

Thanks. I'll at least take the assembly out and look at it.

Originally Posted by alaxfire
My money is on the control assembly / switch.
( If you DO replace the unit, keep in mind that graphiteghost is trying very hard to get his hands on a defective unit )

There are several under $50 on Car-Part.com--Used Auto Parts Market

 
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Old Dec 24, 2012 | 06:01 PM
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Rick-In-Memphis's Avatar
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From: Memphis TN on Grey Road
Default Re: Interior fan speeds (confirming fix)

I am also having trouble with my fan control. What's happening with me is; the fan either works, or it doesn't. To clarify, say I have the fan speed set on any speed, the fan wont work, and as a moment of time passes, the fan WILL come on at the proper speed selected. It almost seems like a loose connection. Has anyone experienced this type of scenario?
 
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Old Dec 25, 2012 | 05:14 AM
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gehoben's Avatar
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Default Re: Interior fan speeds (confirming fix)

I've got the thing!
 
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Old Dec 26, 2012 | 08:01 AM
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dedwards0323's Avatar
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From: Upstate SC
Default Re: Interior fan speeds (confirming fix)

Originally Posted by Rick-In-Memphis
I am also having trouble with my fan control. What's happening with me is; the fan either works, or it doesn't. To clarify, say I have the fan speed set on any speed, the fan wont work, and as a moment of time passes, the fan WILL come on at the proper speed selected. It almost seems like a loose connection. Has anyone experienced this type of scenario?
I've got this phenomena going on with my fan speed. What I've noticed is that this only occurs when I have the A/C on. When only using heat or ventilation, the fan speed seems to work OK. So I'm leaning towards an A/C problem (probably a sensor indicating low refrigerant level) which would switch off the fan/system. Once warm weather season comes back, I'll have the system checked. Might be low refrigerant; might be a bad sensor.
 
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Old Dec 27, 2012 | 12:09 AM
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GraphiteGhost's Avatar
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From: Central South Carolina
Default Re: Interior fan speeds (confirming fix)

Originally Posted by dedwards0323
I've got this phenomena going on with my fan speed. What I've noticed is that this only occurs when I have the A/C on. When only using heat or ventilation, the fan speed seems to work OK. So I'm leaning towards an A/C problem (probably a sensor indicating low refrigerant level) which would switch off the fan/system. Once warm weather season comes back, I'll have the system checked. Might be low refrigerant; might be a bad sensor.

You'll be chasing this for a long time. The service procedure is if the fan speed is not working according to its indicated function, Chrysler first replaces the fan resistor. If that doesn't fix it, they replace the control head. I recommend you read/review section 24 of vol3 service manuals titled HEATING & AIR CONDITIONING, maybe you'll have a better understanding of this system. Good luck!
 

Last edited by GraphiteGhost; Dec 27, 2012 at 12:37 AM. Reason: Clarified information
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