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Old 10-31-2010, 09:02 PM   #1
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Blower motor? Loose plug? Relay or regulator going bad?

WF need some help/advice or opinions.

2004 Jeep Wrangler Sport-fan for heater works intermittently on three different occasions this past week. Turn switch on no motor no blower-but can feel warm air flip switch off and on nothing happens. Leave switch on starts working-eventually. Have had it "start" right after going across RR tracks.

Any ideas?

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Old 10-31-2010, 10:28 PM   #2
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I would lean towards a loose connection.

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Old 10-31-2010, 10:42 PM   #3
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Last week I had the same problem with my fan not working. I removed the plug that attaches to the resistors and the plugs were pretty oxidized. I sanded them with some sandpaper and everything work great now. Try that out and see if it helps.
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Old 10-31-2010, 11:13 PM   #4
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Okay Thanks for the in put will give it a try
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Old 11-01-2010, 12:15 AM   #5
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Must be that time of the year. My speed control went today. Sometimes I have high speed only, other times nothing... Had it happen before. Dielectric grease and some manipulation of the harness got those blades in contact and all was good. Now its another heating season and she dies again. I'm buying/ordering a new switch tomorrow. Not even toying with a junkyard.
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Old 11-06-2010, 05:36 AM   #6
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Update- after taking dash apart, to clean and double check all connections, still had same issue. Replaced the speed regulator behind glove box. (now have a spare) Contact cleaner and dielectric grease on the plug into the blower motor-think I got it.

5 trips no hesitation in reaction to switch settings.

Sounds like fire239 hit this one almost dead on-THANKS!
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Old 11-06-2010, 05:39 AM   #7
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Cool. Glad you got it working bud.

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