Changed relay, fuse, and resistor - NO FAN - JeepForum.com

 
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post #1 of 5 Old 06-19-2009, 07:20 AM Thread Starter
tutelo161
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Changed relay, fuse, and resistor - NO FAN

My fan on 2002 Liberty stopped working instantly - no burning smell or switch failure. I changed fuse, relay under hood, and resistor behind glove box.
Still dont have a fan 1,2,3,4 do not work - ANY IDEAS ????

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post #2 of 5 Old 06-19-2009, 08:00 AM
SirGCal
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Are you talking about the AC/Heat fan? You might have a very common problem with your AC/Heat switch... See examples here:

http://www.sirgcal.com/jeep/pics.html?section=ac_repair

I'd get a DMM and start checking those wires to see where power stops flowing.

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post #3 of 5 Old 06-19-2009, 09:15 AM
Jerry Bransford
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If you changed the resistor pack and relay but the fan still doesn't work on any speed, it's either the fan motor itself, the fan switch, or the cable harness. I lost all but my fan's high speed years ago and it was a combination of a burned wiring harness and blown resistor pack.

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post #4 of 5 Old 06-21-2009, 07:22 AM Thread Starter
tutelo161
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fan works now

I discovered if you unhhook the battery for 30 minutes after changing resistor packs and relays - the computer will reset and the blower fan will work - I had done this when changing out parts to prevent airbag deploy but I was only unhooked for about 5 minutes.
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post #5 of 5 Old 06-21-2009, 07:52 AM
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Quote:
Originally Posted by tutelo161 View Post
I discovered if you unhhook the battery for 30 minutes after changing resistor packs and relays - the computer will reset and the blower fan will work - I had done this when changing out parts to prevent airbag deploy but I was only unhooked for about 5 minutes.
That would only be a possibility if it was like a climate controlled GC unit. The TJs, etc. have no computer controlling system for the fan what so ever. If that was the case, it was coincidence, nothing more. A climate controlled system might have some computer interface but I do not have the FSMs for any grands.. So I can't say for sure.

Sir G. Cal - 2k Sahara TJ

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Originally Posted by SirGCal
If you can't take a nano-second to press shift/period/etc. and make proper sentences and paragraphs, I don't know if I can take a few minutes to respond to your topics... It doesn't have to be perfect by any means, but a little effort goes a long way.
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