Climate control switch replacement - JeepForum.com

 
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post #1 of 9 Old 10-30-2010, 12:08 PM Thread Starter
01swmpthng
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Climate control switch replacement

Blower switch has not been working on 3 of 4 settings. Only works on lowest one. Changed out the blower motor resistor. Lowest setting still works, but now when switch goes between 2nd and 3rd setting it comes on just fine. Is this a switch issue or a relay issue? Obviously the blower works fine. How hard is it to change the switch? Or is it something else?

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post #2 of 9 Old 10-30-2010, 01:19 PM
hefightsfire
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Quote:
Originally Posted by 01swmpthng View Post
Lowest setting still works, but now when switch goes between 2nd and 3rd setting it comes on just fine.
Can you clarify?
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post #3 of 9 Old 10-30-2010, 02:14 PM
monkeee2002
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Quote:
Originally Posted by 01swmpthng View Post
How hard is it to change the switch?
Yes, please clarify that. If it IS the switch, it's easy to replace. The only one that worked right on my 99 was the temp selector. I had to replace the outer two switches, and it was easy-peasy.
And, if yo0u stealership tells you you can't buy just one switch, try a different stealership.
I had one tell me I had to buy the whole unit (all 3 switches), but another Jeep dealer sold me the two switches I needed, and saved me about $80.

The skinny pedal on the right is my friend. the gas gauge is not.
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post #4 of 9 Old 11-02-2010, 12:41 PM Thread Starter
01swmpthng
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You can feel air movement on the lowest setting. When the knob is turned to the other 3....nothing. But if the knob is turned slowly and reaches hlafway between 2nd and 3rd setting the fan turns on full blast.
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post #5 of 9 Old 11-02-2010, 12:55 PM
Melissas6570
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You need a new blower motor, and a new swithch. I would also do the relay mod to the blower motor switch after doing the install of the new parts. Search on melted fan speed switch, and you will find a how to on the subject.

I DO IT WITH MY TOP OFF!
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post #6 of 9 Old 11-02-2010, 06:37 PM Thread Starter
01swmpthng
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Why would I need to replace the blower if it comes on between those two settings?
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post #7 of 9 Old 11-02-2010, 07:09 PM
Knuckelhead
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Quote:
Originally Posted by 01swmpthng View Post
Why would I need to replace the blower if it comes on between those two settings?
Because the blower motor high amp draw is the problem...
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post #8 of 9 Old 11-02-2010, 07:10 PM
99SprintST
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Quote:
Originally Posted by 01swmpthng View Post
Why would I need to replace the blower if it comes on between those two settings?
You've got a 2001 like mine. After several years of use (and we live in GA where the fan gets run a lot) the brushes in the fan motor wear down and start pulling too many amps. This cooks the switch, and usually the blower motor resistor as well. In addition, it can also melt/cook the wiring at/around the switch. You could be experiencing a short in that area. Be careful as this can cause a fire. Trust me, I just went through this with mine (85K on '01 TJ). It is what it is. I've got a great mechanic who does side work at a dealership here in Marietta for great rates (also gets parts for 10% above dealer invoice), PM me if you'd like to get in touch with him. Blower motor, switch, and resistor replacement isn't that tough to do on your own. I just didn't have the time to dip around with it. There is a great write up on this that was already refered to if you are going to do it yourself that will prevent this from occurring again in the future. By the way, welcome to the forum. I'm in Marietta.
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post #9 of 9 Old 11-02-2010, 08:11 PM
gaTJgal
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Quote:
Originally Posted by 01swmpthng View Post
Blower switch has not been working on 3 of 4 settings. Only works on lowest one. Changed out the blower motor resistor. Lowest setting still works, but now when switch goes between 2nd and 3rd setting it comes on just fine. Is this a switch issue or a relay issue? Obviously the blower works fine. How hard is it to change the switch? Or is it something else?
Mine did that between thing and it turned out the knob was cracked where it fits onto the switch.

I've been battling AC issues (much like yours) all summer. I would pull off your HVAC control panel and check for melted wires/plugs. It's very common yet Jeep won't acknowledge the issue. At the local pull a part, it had 12 jeeps and 5 of those jeeps had melted HVAC wires/plugs/control panels. If you do need a HVAC control panel, PM me and I'll get you the info to the place. As of 6 weeks ago they were on back order when I needed one. I'm a newbie and working on this HVAC stuff is very doable.

That being said--this weekend I'm overhauling my HVAC system, adding relays, and the like. PM me if you've any questions.

___________________________________________
I have a haynes manual, tools, and gloves so I don't ruin my nails. Oh yea--let the fun begin!
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