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Old 02-16-2011, 05:51 PM   #1
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Blower Motor/Heater Switch issue

Hi I'm a newbie to the forum. I've searched this forum and others and can't find an answer to my question. Forgive me if it's been answered here.

Approximately a year ago I replaced the resistor which fixed the issue of not having my fan blow at low medium or high. Currently I have three speeds working AND I have heat. But today I thought I smelled something electrical burning. I turned off the heat and the smell went away. Is it possible to have melting/burning even tho everything is working properly? I know the JP magazine article points to the blower motor pulling more amps than what the wires can handle, but I' have also read where folks are disputing that. I don't want to pull the whole unit out of the dash, if in fact what I need to do is repalce the blower motor as well. My rig is an '02 with about 60,000 miles on it. . . mostly stock and hasn't been messed with. Any help appreciated!

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Old 02-16-2011, 05:57 PM   #2
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Seems to have happened to all if us..

You tube has a good video on fixing your problem... type in jeepwranglertech and heater fix... Sorry I cant seem to post the direct link here with my cell : )

Also I never replaced my motor like I should have, just the resister and I don't run it on 4 high, seems to be holding up.

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Old 02-16-2011, 07:24 PM   #3
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many thanks. I didn't smell anything on my drive home tonight so maybe I was imagining things. . . also good idea to run on low . . and thanks for the you tube I had not come across that!
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Old 02-16-2011, 07:34 PM   #4
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Quote:
Originally Posted by Montanagirl View Post
Hi I'm a newbie to the forum. I've searched this forum and others and can't find an answer to my question. Forgive me if it's been answered here.

Approximately a year ago I replaced the resistor which fixed the issue of not having my fan blow at low medium or high. Currently I have three speeds working AND I have heat. But today I thought I smelled something electrical burning. I turned off the heat and the smell went away. Is it possible to have melting/burning even tho everything is working properly? I know the JP magazine article points to the blower motor pulling more amps than what the wires can handle, but I' have also read where folks are disputing that. I don't want to pull the whole unit out of the dash, if in fact what I need to do is repalce the blower motor as well. My rig is an '02 with about 60,000 miles on it. . . mostly stock and hasn't been messed with. Any help appreciated!
Why do you think you need to replace the blower motor? I'm one of those who disputes the "too much current draw" explanation. I think it's because of a loose connection, which will cause the connector to heat up. Jeeps bang around a lot, especially offroad. It only takes about 15 minutes to access the back of the hvac unit and check for melting. I would, just for peace of mind. If you find melting, check back and I'll tell you how to make the connections more secure.
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Old 02-16-2011, 07:48 PM   #5
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I here when the motor gets older it draws more current and melts the switches, Like I said I fixed all my connectors and everything works fine, I just don't run it on High, cause if I do,probably going to happen again since I did not replace the motor.

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Old 02-16-2011, 09:24 PM   #6
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I guess I can pull the heater switch unit. . . looks simple enough . . just thought if I had it out, and found melting. . . what's the point of putting in a new one if the culprit is the blower motor as well. . .
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Old 02-16-2011, 09:39 PM   #7
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[QUOTE="Montanagirl"]I guess I can pull the heater switch unit. . . looks simple enough . . just thought if I had it out, and found melting. . . what's the point of putting in a new one if the culprit is the blower motor as well. . .[/

I would think it's a good idea to do so. People also wired in relays, I guess this virtually fixes the problem. I'm lazy and and took the "if it ain't broken, don't fix it" approach. I work with a guy who owns a 2001 and never had is switches melt. He told me when he bought the jeep a friend had told him about the problem and to limit the use on high speed #4. speed 1-3 work through the resister. Speed 4 draws direct current from your battery, and the factory junk can't take it.

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Old 10-18-2011, 08:54 PM   #8
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TJ Blower Switch (Fan speed switch)

Yeah these stupid things go out regularly. The funny thing is that you can get them at any auto parts store for cheaper than going to the dealership, but they aren't listed under Jeep Wrangler. If you ask for the Blower switch for a 2000 Chevy s-10, GMC S-15, Chevy Blazer, GMC Jimmy, or Oldsmobile Bravada, its the same switch. There is a resistor fix JP magazine did in October 2007 in an article called "retardent." I've taken the liberty of uploading it.. Here is a link to the coveted article.

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Enjoy.
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Old 10-18-2011, 08:57 PM   #9
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""to remove heater control box for inspection""""

Remove the defrost vent cover , pull up on the far side not the middle. pops right off.
Remove the ashtray. Open it and push down on the tab on the inside and slide out.
Remove the screw behind the ashtray.
At the top of the center bezel where you removed the defrost vent cover,,,remove the 2 screws that hold on the bezel. Pull the whole center bezel off..pull right off.
The heater/ac controls will have a few screws holding it on...take them off.
Poof your done. and can inspect the controls.

READ through this WHOLE thread. And the links in post #10.
CLICK ME---->>>>http://www.wranglerforum.com/f5/heat...rol-16174.html

If you have any more questions let us know.
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Old 10-19-2011, 02:07 AM   #10
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If it is the resistor, did mine today .... part number 05139719AA advanced auto about $30.

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