2nd Gen Non-Engine/Transmission Blower Motor - No Mid-Range Speed

[wcaldwell]

I just noticed my blower motor operates on low and high speed only. There's no mid-range speed. Am I looking at a new blower motor, speed control, or both?



Any suggestions?



Wayne

 

[Allnew2Me]

It sounds like your blower resistor is gone. Just today I changed the one in my daughters' Jeep and it is the same one that is in our trucks through 02. The dealer wanted $71 for one but I found them online for around 40 bucks.

I took it out and one of the filaments was disconnected from its terminal so I soldered it back on and it works.

 

[BarryG]

I replaced mine last winter. Dealer wanted 70ish for the resistor. Was an easy fix but definitely an overpriced resistor. My resistor was somewhat brown as opposed to the ceramic white and was cracked in several places including a decent chunk out at one of the terminals.

 

[rweis]

I think the way the blowers work is the fastest speed is no resistor ie full speed. Each increment below that there is a resistor that lowers the blower voltage and therefore it runs slower. Each speed is seperate from the others as each speed has its own resistor.



I am sure there are full board replacements. As noted above any of the resistors can have a failure. Milestek is a supplier of component parts to the electronics and computer industries. They probably have the exact resistor replacement in the resistance and wattage and form factor you need.



Might be an alternate source if you want to replace just the individual component that failed.



Bob Weis

 

[Dave M]

I think the way the blowers work is the fastest speed is no resistor ie full speed. Each increment below that there is a resistor that lowers the blower voltage and therefore it runs slower. Each speed is seperate from the others as each speed has its own resistor.



I am sure there are full board replacements. As noted above any of the resistors can have a failure. Milestek is a supplier of component parts to the electronics and computer industries. They probably have the exact resistor replacement in the resistance and wattage and form factor you need.



Might be an alternate source if you want to replace just the individual component that failed.



Bob Weis

On my 97 there are not seperate resisters but one resister pack that has taps for low and med speeds. As you stated the high speed does not use the resister pack. It sounds like either the resistor pack is bad or the fan switch. I'd remove the resister pack and ohm it out with a volt/ohmeter.



The reister pack is easy to reach. Go to the passenger side and lay on the floor. The resister pack is near the fan (you will see it sticking down) and has 2 screws holding it in. Follow the wires from the right side near the door going to your left across the blower motor. That is connected directly to the resister pack.



Dave

 

[wcaldwell]

I appreciate the replies. Will check the resistor pack and might even go out to the "U-Pull-It" wrecking yard and get a couple along with the blower motor (if it's all there).



Thanks again... .....



Wayne

 

[tgordon]

Replaced on this spring on the wifes car. When I picked up the new board I asked if I could return it if that was not the problem and they said yes. Needless to say she went from a two speed fan to a 6 speed and was much happier. You might want to take a Ohm meter with you to make sure the ones you get at the bone-yard are still good.

 

[jkidd]

I resoldered the resistor. works now

 

[GAmes]

My blower motor bearings finally gave out so remembering this post I pulled it up. There is a "U-Pull-It" yard near here so I went there after getting a price from mopar4less. (over $100 for the blower). I walked out with a fan and resister (even though I don't need one now) for a total of $15. 94Oo. 10 miles of driving, 10 minutes of work saved me a couple hundred bucks. What a deal!!! Oh, in case anyone is interested, they have more.

 

[WilsonF]

There have been posts on this before and if I remember right, if the resistor pack gos out,the consistence was, suspect the bearings in the blower motor.

 

[BarryG]

WilsonF

So right. I replaced my resistor last year. It went out again this winter. A couple times when it was really cold out <0 I would hear a screeching sound momentarily. Then my fan went to two speeds high and low. So the resistor went out again and figured the motor was going causing the resistor to blow. Went to dodge a couple weeks ago blower motor was over $250. I passed on that. Went to autozone and picked one up for $60 with a lifetime warranty. When I pulled out the motor the old one still worked but was very hard to turn compared to the new one. The resistor was replaced as well the solder had melted away on one of the contacts so I kept it as I can fix that for the next time if there is one.

 

[jkidd]

my resoldered job is still holding. 10 cents of solder is better than $71 in new parts. (for now at least)