2002 TJ Blower Motor Stopped Working - JeepForum.com

 
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post #1 of 10 Old 06-18-2009, 09:18 PM Thread Starter
mmdotking
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2002 TJ Blower Motor Stopped Working

On my 2002 TJ, my fan/blower stopped working all of a sudden today. No fan speed selected will work. Not, 1,2,3,4. I can hear the A/C kick in when I turn the switch on, but no blow. Could it be the blower motor resistor? The switch or motor itself? THanks.

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post #2 of 10 Old 06-18-2009, 09:29 PM
jreed80
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If no speed will work it is most likely the blower motor its self since the high speed does not run through the resistor itself there is a relay check it first and all of your fuses also to check you blower motor with out pulling it out cut the two wires going to the motor leaving enough room on both sides of the wire to splice it back together and jump one to power and one to ground ie. the battery positive and negative, a piece of speaker wire will work, the fan if good should come on in high speed, if it does you are as unlucky as me and the switch and resistor have went out at the same time. I have had every problem possible with this subject on my dodge and my jeep the person before me let water leak into the switch on my jeep and I had to replace it all on my dodge.
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post #3 of 10 Old 06-18-2009, 09:33 PM
BringThaPain
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I had the same problem. I ended up buying a new blower motor and it worked fine. I bench tested mine. Took it out and powered it up to a 12v and it didnt work.
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post #4 of 10 Old 06-18-2009, 09:45 PM
Cuder
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Read this thread and the thread I posted on post #24. Look at picture of melted connector on this thread. Did you smell anything before it went out?

http://www.jeepforum.com/forum/showt...=772207&page=2
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post #5 of 10 Old 06-19-2009, 05:58 AM Thread Starter
mmdotking
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Great, thanks guys. Couple questions. So, on the relay, how do I check that? I'm pretty sure I checked all the fuses. They "look" good. I checked them behind the glove box and under hood.
It shouldn't be the switch, right? I'm going to try and isolate this thing and take your advice.
I'll try and take out the blower and bench test it. Is it easy to take out the blower? If I had to get a new blower where do you get it? I've searched all over, rockauto.com, etc. and all they sell is a Resistor. Crummy thing is, I only have 21k miles on this 2002 TJ. Wouldn't expect an A/C problem already.
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post #6 of 10 Old 06-19-2009, 06:07 AM
NotURMailman
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Don't pull the motor out to test it, just grab a test light and check for volteg to the power wire going to the motor. If yo have no power move backwards through the system from there. If you have power and no blow, it's almost surely the motor, but check the ground just in case before you replace it.

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post #7 of 10 Old 06-19-2009, 07:30 AM Thread Starter
mmdotking
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Sorry for sounding too novice, but to test it, what steps should I follow? Is the test light the same as a voltage/ohm meter? Do I turn on the ignition to verify power to the motor, or is that high speed bypassing the resistor such that I just touch the hot wire? And where is the ground?
I'm novice but I can follow directions really well, so I appreciate the help.
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post #8 of 10 Old 06-19-2009, 07:37 AM
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You can use the meter or test light. Turn it on and check the wires as close to the fan as you can. The advantage of the test light is that you can probe the wire through the insulation. Turn fan on and check for power to the motor as close to the motor as you can. If there is power, check the ground. You can check the ground in two ways. If your are using a test light, connect the clip to a known power source and probe the ground wire (again, as close to the motor as you can get), if the light lights up you have ground. If using a meter check continuity from the same spot on the wire to a known good chassis ground or the negative battery terminal. If you have power and ground right at the motor, then you need a new motor. I strongly suggest wrapping some good electrical tape around the spots on the wires where you poke the hole with the probe after you are done to prevent moisture entering and corroding the wire from the inside out. It may be a slim chance, but tape is cheap and easy to install...

My RHD TJ - Savvy equipped... And loving it!

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post #9 of 10 Old 09-11-2015, 02:19 PM
Pkelly9844
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2001 wrangler

I have cked everything an still no blower, no ground at motor, motor works fine, resistor has ground on all 4 wires, it worked off an on before it quit, I think a ground wire came loos but don't where to go from here , new switch, relay, resistor. Anybody got a clue
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post #10 of 10 Old 09-11-2015, 05:57 PM
Rubi4MyMrs
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You should test for ground with a test light, not a meter, at the brown/tan wire with the speed switch on high & the tan wire on low. Both will bypass the resistor & by grounded through the speed & mode switches & to a grounded bolt in the firewall. If you are SURE the wires are grounded at the resistor (through the speed switch & mode switch) & not at the motor then there is on open in the wire to the motor which should be brown/tan. It could be at the splice but most likely at the connector at the motor, possibly the terminal is loose & not making good contact. Sometimes wiggling the connection will get the motor going & you know there is a bad connection there.

To be sure you have a good ground you should try running a temporary grounded wire to the brown/tan wire at the resistor. With the key on, see if the motor runs at high speed.
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