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2002 Dodge Dakota HVAC blower problem

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  #1  
Old 08-03-2007, 08:43 PM
terry s terry s is offline
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Default 2002 Dodge Dakota HVAC blower problem

The blower will not run on any speed. Fuses are ok. Bolwer runs when I put 12v to it. I checked the 2 prong connector coming to the blower. One terminal lights a test light. The other does not have continuity to ground. I pulled the resister card. With it plugged in all legs have continuity to ground. I am not sure but maybe the fan switch is bad. I cannot see how to get the fan switch out.
Any help will be appreciated.
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Old 08-03-2007, 11:52 PM
imnothot02 imnothot02 is offline
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Default RE: 2002 Dodge Dakota HVAC blower problem

well that isnt good...change the resistor! lol
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2002 Chevy Trailblazer LT 4.2
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Old 08-04-2007, 12:54 AM
terry s terry s is offline
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Default RE: 2002 Dodge Dakota HVAC blower problem

Thanks Travis. How do I test the resister card before I buy a new one and find out the old one is ok?[:@]
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Old 08-05-2007, 10:02 AM
imnothot02 imnothot02 is offline
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Default RE: 2002 Dodge Dakota HVAC blower problem

you did they shouldnt all have continuity...its a 15 dollar part dealer only however, you may want to make sure that your a/c drain isnt draining back into your truck onto your passinger floorboard...this is what shorted mine out
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---Travis---
2002 Chevy Trailblazer LT 4.2
1996 Subaru SVX LSi AWD 3.3 L Flat 6 (Highway car)
1987 Grand Am 2.5 L Inline(Just keeps going and going...)
Can't forget the work van 04 3500 EXPRESS lol
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Old 08-05-2007, 11:01 AM
terry s terry s is offline
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Default RE: 2002 Dodge Dakota HVAC blower problem

Thanks Travis. Problem solved. With the resistor card plugged in to the wiring harness all legs did have continuity to ground. I could not get the plug to come off the resistor card. Looking carefully at the plug one of the wires had the insulation slightly melted and there was a tiny bit of green corrosion on the wire. It appears that one connection was bad and had burned it's self in to. There was no continuity from that wire to the resistor. When I jumpered from the wire to the resistor terminal all fan speeds work fine. Although the resistor card seems to be fine I can't get it off of the connector so I bought a new resistor card and ordered a new plug. Resistor $10 and plug $12.
As a band aid I crammed 2 pieces of .032" stainless steel safety in the bad terminal and all speeds work fine for now. Iths might keep working until Tuesday when the new plug is supposed to be here.
Thanks for the AC drain tip. There was no sign of that being a problem but I will check it anyway.
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Old 08-05-2007, 01:01 PM
imnothot02 imnothot02 is offline
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Default RE: 2002 Dodge Dakota HVAC blower problem

good to hear! on mine the water would roll out of the drain stub (it just stubs about 1/4 inch outa the firewall) then the water would roll back into the cab...idk if that makes since or not
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---Travis---
2002 Chevy Trailblazer LT 4.2
1996 Subaru SVX LSi AWD 3.3 L Flat 6 (Highway car)
1987 Grand Am 2.5 L Inline(Just keeps going and going...)
Can't forget the work van 04 3500 EXPRESS lol
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Old 08-05-2007, 01:01 PM
 
 
 
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04, 2002, ac, blower, caravan, dakota, dodge, drain, fan, heater, location, problems, resistor, sport, truck, working

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