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Unread 05-30-2006, 08:53 PM   #1
haumana
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Blower Resistor w/ATC or w/o ATC...

Hi all-

I'm in need of a little guidance.

I need to change the blower motor resistor and the stealership said it's $170. Ouch!

The HVAC I have does have the "Auto" feature which I never use. Would it be safe/okay to buy the cheaper resistor that doesn't support the Auto feature? I've never been fond of Auto climate controls, but it came with the ZJ so, "Oh, well."

That being said and done, does anyone have any suggestions on where on the internet I should be looking for this part? The part that I think I'm looking for is 4720 278.

I am grateful for small things ... such as the a/c still working, even though it's always on "high" now

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Unread 05-30-2006, 10:04 PM   #2
Briandl
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Call another dealership, you should be able to get it for 110.00..

Otherwise I wouldn't know...
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Unread 05-30-2006, 10:54 PM   #3
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http://www.drivewire.com/jeepparts/c...owermotor.html

Or try http://www.uneedapart.com/
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Unread 05-31-2006, 04:16 AM   #4
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The ballast between ATC and manual are not interchangable.
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Unread 05-31-2006, 04:30 AM   #5
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Quote:
Originally Posted by CurtP
The ballast between ATC and manual are not interchangable.
Bummer

Thanks for the info though. Now I just need to find the resistor from some place other than a stealership.

I've done some surfing on the web, but mostly turn up blower motors. Does anyone out ther know if the blower motors that are being sold also include the resistor that supposed to go with it?
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Unread 05-31-2006, 05:58 AM   #6
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Go to www.jeepoemparts.com I did a quick lookup of the part number you gave and they have it for $50.42


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Unread 05-31-2006, 06:07 PM   #7
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Are you sure the actual resistor is bad? Reson I say that is the plug that went into mine melted and then it shorted out and quit working, I took it apart and soldered the wires directly to the resistor pack and use heat shrink tubing to keep the wires from touching on the board, I was able to make it work again. If the thing's actually bad disreguard, but I was originally told my resistor pack was bad, and those aren't cheap.
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Unread 05-31-2006, 10:13 PM   #8
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Quote:
Originally Posted by 10achik
Are you sure the actual resistor is bad? ...
I'm never sure about anything. I did a quick look at the Haynes (because some of us don't have a FSM ), and it said that if it has the auto function, then trying to do the circuit testing won't work, it requires special tools, blah, blah, blah .... I'm not how truthful that statement is, but it's effective enough to stop me from doing it.

But from what I can see, it seems that the blower motor resistor is a common problem. I wanted to take a look at if for myself, but it doesn't seem to be "noob friendly" .

I tried to take a look at it, but then decided against it because the sun was beating down my butt and my legs were getting severly sunburned

I'm still open to suggestions and advice!
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Unread 05-31-2006, 11:07 PM   #9
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You know where it's at, right? It's under the glove box in the very back almost where the firewall is, if your a contortionist you can get under there and look up and unplug that plug and see if it's melted, if it is, I'm 99.9% sure that's your problem. All you have to do is un screw the resistor pack and then clip the wire ties that run from the blower motor and stretch out the wires so that you will have room to work on it. I actually clipped the wires going to the blower motor, so I could take it inside and work on it.

Then I took the plug and clipped the plug end off of it and soldered them to the actual leads in the resistor pack, used the heat shrink tubing to prevent the wires from touching and then put it back together. Give me a minute and I'll find you the write up...
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Unread 05-31-2006, 11:15 PM   #10
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OK, here it is, this is the one I used and it helped a lot...

http://www.jeepsunlimited.com/forums...d.php?t=678590

Keep going down and you'll see the pictures. The guy talks about a kit the dealership will sell you, I personally did not use it, I just used the same guage wires and used solder instead of using the spade terminals. Worked like a charm, it's just a poor design really, bending a plug completely 180* and plugging it back into something, of course it's going to eventually screw up.

Hope this helps
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Unread 05-31-2006, 11:33 PM   #11
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Mahalo!

Thanks Ken!

I will print up some of the photos for reference when I'm under the glove box again. Hmm... I'm hoping my wires and/or resistor looks that fried. No kidding, "What were they thinking." Well, I guess that' one way to make sure that the customers keep on coming back.
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