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oilersman
Dodge Dakota
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6/19/2005
19:28:27
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 Subject: RE: Blower Motor dead
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ok, i've got a dead blower but works if i hot-wire a 12 volt source direct. i've also got 12v right at the connector directly to blower and still wont come on.no corrosion whatsoever on the resistor bank, shouldnt the blower work at all or at least one speed if the resistor was shot? any thoughts? Please.
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John Gardner
Dodge Dakota
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7/13/2005
17:02:22
|  RE: Blower Motor dead - still
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My problem is exactly like oilersman with that there is voltage 12.4 to 13.8 at the connector going into the blower fan but it still doesn't work! I bench tested the blower and it works great. The resister pack is on a National Backorder with Dodge. At least that's the song and dance I am getting.
What about the 5 speed switch?? Where in the schematic is it anyway. Can it cause this problem.
Why do I always get the hard ones??
Thanx guys,
John
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oilersman
Dodge Dakota
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7/13/2005
18:52:57
| RE: Blower Motor dead
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yep, it was the resistor pack, all is well now.
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Dan M
Dodge Dakota
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7/13/2005
18:53:21
| RE: Blower Motor dead
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The blower motor fan speed is controlled by the number of resistors voltage passes through to ground.
- Dan M
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RicD
Dodge Dakota
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7/19/2005
13:40:54
|  RE: Blower Motor dead
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I thought you all had solved my problem, but no. I've got a 94 Dakota. The blower motor has only worked on medium and high speed for about 6 months. For a vehicle with over 200,000 miles I didn't consider this an issue. Last week I lost the blower altogether. High humidity and 90 degree temps are no fun without AC. Checked this BB and sure enough the resistor was corroded. The plastic connector at the resistor end of the harness was also melted but it does not appear that any of the wires have been effected--no shorts that I can see. I replaced the resistor and fired up the hvac switch and nothing--except a plastic burning smell. Could the motor end of the harness be bad? could the motor be bad? How hard is either to check without dismantling the whole system? Advice?
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jim
Dodge Dakota
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7/24/2005
11:32:48
| RE: Blower Motor dead
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where is blower fan resistor located on 2001 dadge dakota
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John Gardner
Dodge Dakota
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7/24/2005
12:38:17
| RE: Blower Motor dead
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Under the dash on the passenger side.
About the middle. Its wire harness is 5 wires taped together with black tape. Three hex screws are holding the pack. One is very hard to get to. You can drop whatever you need to in order to get to it.
Fan/motor assembly is far right with a black and a green wire going into it via a round connector.
Good idea to check that is works before buying the resister pack.
Hope I helped.
John
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jim
Dodge Dakota
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7/25/2005
09:47:37
| RE: Blower Motor dead
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thanks john that helped alot
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George
Dodge Dakota
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8/04/2005
12:33:26
| RE: Blower Motor dead
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I have a 2003 Dakota with blower motor problems. It stopped working. I took the motor and connected it to 12 volt power. It did not run. Spins okay by hand not resistance to speak of. So I ordered a new motor. Hooked it up to the lead in the truck and it does not spin.
I do have power at the connector to the motor, 12 nice volts. I checked continuity from hot to neutral and seem to be okay. Could the resistor be bad and still get power to the motor connector?
What now? The motor is not cheap but I guess I will have to swallow that if the old one is fine.
Any ideas??
Thanks
George
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John Gardner
Dodge Dakota
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8/04/2005
14:43:09
|  RE: Blower Motor dead
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Hi George.
YES!! You will still get what looks like a good-clean 12 volts at the red and green wire connector going into the the actual blower motor.
This 12 volt reading is very misleading to the novice because if the resistor board pack is open, you will have the 12v but that line will NOT handle any CURRENT to speak of. (The current present may run an electric tooth brush but that's about it) The blower fan requires a LARGE current rating. As you found out I imagine, that line would not even run the good motor you just bought! (Remember you must have your ignition turned on and the blower switch turned on to test).
To properly test either your old or new blower motor, you would need to hook it up to either your battery (direct) or a 12VDC 5amp power supply (like a supply for a moble CB radio). Or find a simple fix it shop and offer the guy a couple bucks to test it to see if it or they both turn. Also be aware that this is enough current to knock you on your butt so be carefull and your test wires should be at least 18 to 20 gauge. It will heat up so only let fan run a couple of seconds if it turns. That's long enough to verify that it's a good motor. If it isn't, go get that $11 resister board.
If you would rather not do all this testing then you may want to just start trying to locate one of these boards because the fact that you saw 12V at that connector but it wouldn't run the new motor tells me that the board pack is shot. Besides it's no more than $13 with tax. Also there has been a terrible shortage on these boards. I found one here in Texas but had to drive 70 miles one way to get it and it was his last one. If this is your dealers case, have him to do a search for you. His computer will find out who has them and you can choose the closest dealer nearest you.
Good Luck!
John
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George
Dodge Dakota
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8/04/2005
15:49:53
| RE: Blower Motor dead
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Message:
Thanks for your response John. I did connect the old motor directly to my battery and it did not run. I may not have used the wire sizes you indicate but nothing got hot and the motor did not spin up or even wiggle. As I said I did not test the new one that way because I was concerned about perhaps hitting it with too much voltage and damaging it.
I am wondering if I have two problems, a bad original motor and a bad resistor pack. The bad motor damaging the resistor pack. The other thing I am wondering is if I used too light a gauge wire would it pass enough current to start the motor to spin. Like I said the wire did not get hot.
I am going to pull the resistor pack tonight. I believe on the 2003 it is mounted on the heater box. There is another plug there with several wires going into it so I assume it is the resistor connection. Do you know where the resistor pack is on the 2003 models?
Thanks again for your help.
George
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John Gardner
Dodge Dakota
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8/04/2005
16:50:30
| RE: Blower Motor dead
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Message:
And I'm not sure that polority + and - is an issue when testing.
As for the this wire not passing the larger current, don't worry because if the motor does work the thin wire will act as a fuse whereas it will heat up, start smelling and smoking and break almost instantly with a wire that is about 22 ga or thinner. (I think)
The pack on my 2001 has five colored wires going to it but you cannot see the wires because they black taped them trying to make them into a "poor man's harness". Anyway, the other end of this harness (up near the dash/floorboard) is joined with the black and green fan motor wires.
Should be no problem in testing the new motor with your battery, or even with 2 lantern batteries in a series for the 12 V. Either way will tell you what you need to know!! Otherwise you will spin your wheels testing this and that for weeks until you finally buy the $13 part. Or you can just get the part and save all the time and problems and go back to a normal life.
Also, when you do inspect the pack you take out of your truck DON'T think it's good because it isn't burned, sizzled, scorched, or corroded!!!
My bad pack looked perfectly fine and brand new if you will. Some do and some don't look burned and bad.
John
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George
Dodge Dakota
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8/05/2005
08:33:59
| RE: Blower Motor dead
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John, I pulled the resistor pack last night and plan to get one today if I can find one locally. Last question, since I have power going to the resistor pack is there a possiblity the switch is bad? I have power at the resistor pack any time the ingition is on even if the fan switch is turned off. Is this normal or is it a sign the switch is bad?
Thanks
George
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John Gardner
Dodge Dakota
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8/05/2005
09:05:53
|  RE: Blower Motor dead
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Good question! I really don't know since I never got around to measuring at that point. I would have had to tear open the harness which is more work that I wanted to do at the time.
Guessing...from what I'e read on this forum about this blower problem, I'd still blame the pack 99% of all the cases. Remember that the electricity 12V when measured with a meter does read 12v however the meter doesn't tell you on whether or not the circuit will let the motor draw it's required high current.
John
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George
Dodge Dakota
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8/05/2005
15:50:28
| RE: Blower Motor dead
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John,
On my visit to the Dodge dealer’s parts department I found out a couple of things I will share with you and others.
Chrysler puts the switch and the resistor bank in the neutral (ground) side of the circuit which explains the hot all the time the key is on that I discovered. Interesting. Not being real familiar with electricity that seems odd that the resistor would work to control the fan speed. I thought a resistor lowered voltage and that would have to occur before the item being controlled.
This probably goes back to the old practice Chrysler had of connecting the positive terminal of the battery to the body as opposed to the negative terminal of the battery.
They also said they thought the problem could be wiring which would lead me to believe that would be between the resistor bank and the switch. However, I did have continuity so the ground is there but it may be a weak ground.
Thanks again for all your help.
George
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George
Dodge Dakota
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8/06/2005
06:23:31
| RE: Blower Motor dead
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Installed both the resistor pack and the new motor and all is fine.
Thanks for all the help John.
George
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dalegribble
Dodge Dakota
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6/04/2007
10:49:46
| RE: Blower Motor dead
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Where is the resistor pack on 04 Dak.
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99dakotabob
GenI
6/06/2007
10:55:14
| RE: Blower Motor dead
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Can anyone tell me exactly where the blower motor resistor is located on a 1999 Dakota?
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cbminfo
Dodge Dakota
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3/13/2008
17:09:37
| RE: Blower Motor dead
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Message:
2nd dodge dakota.
1st 1989 had this problem. dealer replaced the resistor faster than I could find the lounge.
2nd time 1993 dakota replaced fan motor, they also shorted the radio out, burned out wipers. I suspect same trouble burnt resistor.
3rd time, just now, same 93 dakota, My guess, the resistor & a crooked dealer. Green wire burned AGAIN !..
And obviously this is a recurring problem with almost all dakotas and replacing a fan motor for $260+ is a bad idea.
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flytyer67
Dodge Dakota
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11/01/2009
09:52:58
| RE: Blower Motor dead
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Message:
How do I get fan switch resistor pack out of the heat/ac duct above the fan, in the 2005 Dodge Dakota?
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