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Neil
Dodge Dakota
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6/12/2002
19:58:18
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 Subject: Blower motor relay
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I have a 96 Dak and I keep frying the relay that goes to the blower motor. You know the one under the hood in the fire wall on the passanger side. I have replaced the blower motor once, what an a@# pain that was and the relat three times. If you have any inputs just let me know. Right now im cursin with it disconected but it is getting hot.
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Jon
Dodge Dakota
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6/13/2002
12:06:58
|  RE: Blower motor relay
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Replace the wiring between the relay and the motor, and make sure your ground is good. Theres a lot of current flowing through that circuit, i little bit of corrosion or a bad connection somewhere will create a high resistance and fry the weakest link in the circuit (the relay).
-Jon
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Neil
Dodge Dakota
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6/13/2002
19:43:05
| RE: Blower motor relay
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I checked all the wires when I channged out the motor. I will give any thing a try. thanks
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Pistolero
Dodge Dakota
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6/13/2002
20:45:55
| RE: Blower motor relay
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What's the condition of the blower motor itself? If you're experiencing relay contact failure, it's probably because there's too much current flowing through them, and they get too hot. Since a relay's only job is to pass current through the contacts, they most often fail because of excessive current, or excessive sparking at the contacts when they make/break. If the relay is failing to energize, that's likely a fault in the control circuit for the relay. My suggestion would be to check the blower motor. If the bearings are going bad, the extra force needed to spin the cage would greatly increase the current going through the circuit, which could fry your relay contacts. If it's too high, it should blow a fuse. Also, as Jon suggested, make sure that the motor has a good, clean ground...not secured to a rusty firewall with rusty bolts...hope this helps.
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Pistolero
Dodge Dakota
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6/13/2002
20:53:34
| RE: Blower motor relay
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Message:
Neil, when I posted my first reply, I forgot that you'd mentioned that you'd changed the motor out...was it a new one or a junkyard motor? Was it an exact replacement...not one rated for a higher current rating? Since you say the wiring looks OK, not discolored or hardened from heat...check the relay connections...make sure the relay is energizing solidly...not chattering. That's about all I can come up with right now...
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Neil
Dodge Dakota
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6/14/2002
01:46:26
| RE: Blower motor relay
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Message:
I replaced the motor with a junk one the motor ops checked good and with no ware to the motor I used it. I did replace the terminalt to the relay when I replaced the motor. Now that I think about it mother mopar calls it a relay but it is more like a resistor. Kinda like the one on my darts ignitions system. It has coils of wire and is all open, nothing like a relay for driving lights or the ones under the hood for the starter and stuff. I know that it is the same conection that is over heating. I have replaced all the components to the a/c and heating system to include the "relay", motor, switch/control unit in dash. It is a simple system and I am mechanicly/electriclay inclined (cant spell good though) but this is kicking my A$$
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Pistolero
Dodge Dakota
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6/14/2002
10:49:26
| RE: Blower motor relay
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Message:
Yeah, that might not be a relay. The old ignitions used a ballast resistor in circuit to limit current, and there was usually a connection at each end. The wire resistance element was often exposed on one side, or filled with a grout like substance, but you could still see the sides of the resistance element. If it's a relay, you should be able to hear it click or feel it with your fingers when it energizes. I'm sure that if it's a resistor, it would have the same resistance rating as the one you're replacing? If they were too low, too much current would flow and burn them up. I know about electronics, but I don't know enough about the wiring setup to know what's used or where the problem's coming from. I've never worked on one. I do know that if something gets hot and burns up, there's something causing too much current to flow...a short or excessive load. You might need to take it to an electrical shop if you can't get it figured out. Good luck!
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Jon
Dodge Dakota
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6/14/2002
22:37:50
| RE: Blower motor relay
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Message:
You say a coil of wire that you think is a resistor. Where is it located? Is it mounted to the motor or plastic duct work so that the coil is inside the duct? If so then it is the resistor array and they do get hot under normal use, thats why there located in the air duct, so they can be cooled by the flowing air.
Also regarding the wiring. Even if it looks good it can be all corroded inside the insulation. I have seen lots of starter cables leave people stranded in parking lots. The cable looks good until you cut it open and it's all green and corroded.
-Jon
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Neil
Dodge Dakota
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6/20/2002
23:48:36
| RE: Blower motor relay
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Message:
Sorry I havent posted in a few been working as far as the wire is concerned it omed good I know alot about electronics and the shuch I know that something is causing over current but i just cant fine it I think I will just take it all out and replace every thing or at least look at it all in detail. thanks to all who posted I will let you know what I find. till next time...
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kokomo
Dodge Dakota
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6/04/2003
19:34:45
|  RE: Blower motor relay
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Message:
i have a 95 dakota with a 5.2 the blower only works on the second to highest setting i have changed the switch ,but still no luck. help!
kokomo
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vern
Dodge Dakota
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6/05/2003
12:30:56
| RE: Blower motor relay
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Message:
it,s on the fire wall,with hood open -left side looking in-up near the hood hing-square fiber-held on with two small screws-4 or 5 wires-one plug,when removed on back side there is 3 or 4 coils that work as a resistor,feeding the blower motor with the right amount of current for the speed you have selected[becareful these coils can get very hot when current is on]kokomo,my guess is the plug is,nt connected good to the resistor or may-be the switch in side
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kokomo
Dodge Dakota
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6/22/2003
09:28:20
| RE: Blower motor relay
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Message:
checked the coils like you suggested and the plug and connections, still no luck. is there another relay that i havent found yet?
kokomo
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93 DakSport
Dodge Dakota
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6/23/2003
06:19:30
| RE: Blower motor relay
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Message:
its not a relay..its a resistor...buy a new resistor and check how corroded the wires leading the the resistor are..if you see any green at all..splice the wires shorter or replace..also replace the relay in the relay box too..it couldn't hurt or if it doesn't have a relay in the black box check for a fuse..maybe u r using the wrong amperage?
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zguinn
Dodge Dakota
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8/27/2016
11:10:13
| RE: Blower motor relay
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Message:
Where is the blower motor relay on a 2001 Dodge
Dakota? I have replaced the resistor and the
pigtail to it as they were melted and fused
together. I have not replaced the motor but it
currently is operational. I bought a replay too
because they are inexpensive but now I can't find
it. After replacing the resistor, I still only have
a High Speed Only blower.
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