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Hello! to answer your question; No...The intermittent operation is more than likely being caused by loose or oxidized contacts in the motor connector plug...Blower motor switch connector or the blower motor resistor plug...go to Radio Shack and purchase a product called DeOxit...cost $15...It's a two spray can package...A cleaner and contact protector spray...Cans are small you do not need much...Spray all three plugs; both male and female pins...You will notice a bubbling action...No wiping off...This is a no touch spray...This should clear up the problem...On the blower switch plug is a Black/Orange wire which goes to ground...Using an ohmmeter check this wire for zero ohms to ground...On the X10 scale...If you do not read zero ohms...The connection of this wire needs to go to bare metal chassis ground...
on the left side of the steering wheel, remove the plastic circular shape that your door touches when it is closed. your door must be open to remove. there you will find the heater fuse and many more.
Sounds like your blower control modular. It is located on the passager side floor under the dash. If you can find the blower motor and follow the wires back from it will lead you right to it (about half a foot away from it). It plugs into it. and has two screws you will have to remove to get it out. The two screws can be kinda hard to get to and you will have to get the modular from the dealer but if you can change it this should fix your problem.
It is under the dash by the blower motor on the passengers side.Just turn on the blower motor and follow the fan noise if it works.The resistor will be connected to the blower motor.Hope this helps.Good luck.
Ummm if the blower motor is bad it's a ***** to replace, I'd spring for a dealership repair to replace the motor
try this (But I doubt it) look under the hood on the firewall near the far right side, if you see the back of the blower motor, whack it with a hammer, this may work and it's tmporary at best, if you're very lucky the blower can be unbolted and removed on he engine side, but that's rare
Sorry
Behind the vacuum heater controls in the dash, they lead to a relay mounted there. That was the relay that was bad on my Dodge. It was a digital readout one.
Relays
Blower Motor Relay(s)
The blower motor relay is located in the relay panel on the left front fender apron (16054). When the blower motor circuit is energized, the contact within the relay closes to complete the circuit for blower motor operation.
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