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-   -   Replaced Blower Motor Resistor and Connector and Fan only blows on high, please help! (http://www.jeepforum.com/forum/f310/replaced-blower-motor-resistor-connector-fan-only-blows-high-please-help-1471827/)

rhiannonkoch 01-31-2013 10:39 AM

Replaced Blower Motor Resistor and Connector and Fan only blows on high, please help!
 
I have a 2001 Jeep Grand Cherokee Limited V8 and we replaced the blower motor resistor and the blower motor connector with wiring harness. Now the fan will only work on High even when in the off position. Also, at first we had it working right but when we turned the car off the fan was still blowing and wouldn't stop. Please let me know of any solutions. I have scanned the forums but nothing actually gives me a straight forward answer on what I should do?

We have the Standard brand Blower Motor Resistor
and the Duralast brand Connector and Wiring Harness

I appreciate the help!

Schlotzky 01-31-2013 10:43 AM

3 Attachment(s)
I'd say you wired it wrong. IIRC, the blower motor has constant power and ground, and the smaller wire controls the fan speed and whether or not it's on at all. The small wire goes in the middle as shown here, with the far left green wire in the picture being the thick black wire from the Jeep's harness.

http://i130.photobucket.com/albums/p...y/IMAG0251.jpg

rhiannonkoch 02-01-2013 05:57 PM

Thank you for your help, the trouble we are having is the wiring for the connector and wiring harness we bought is Duralast brand and the wires are different colors than the wires that are in the Jeep...so I'm trying to find out which wire goes to which wire.

I have done a million Google searches and find so many posts regarding this subject its crazy. I can't believe how many people have had this exact problem. I don't recall ever reading whether Jeep even had a recall about this part.

It all started in the summer when my A/C went out, then we figured out that it was the Blower Motor Resistor, and noticed the Wiring Harness had melted and the wires had to be cut out.

Now mind you, I'm a female...I know a lot about cars specifically VW's and I'm not the one who is fixing this, my boyfriend is and he is really good at working on cars...but is having a lot of trouble with this. I'm just not sure what to do.

I need to find a schematic or diagram or something. Or a how to, because I can't afford to pay someone to do it after buying all of these parts.

Ugh, it's so frustrating. But thank you for your responses.

Schlotzky 02-02-2013 12:30 AM

3 Attachment(s)
If you can trace the wires back to the Jeep's original harness, you should eventually get to a black and red wire and a thinner wire. Just make sure the black wire eventually gets to the far left spot on the resistor, the thin wire in the middle, and the red wire on the right. Heck, as long as the thinner wire is in the middle, just guess, and if it doesn't work, swap it and you're good to go.

As you might be able to tell in the picture, I just ditched the connector altogether and soldered the ends of the Jeep's wires directly to the blower motor resistor pins and covered them in heat shrink. This way I know it won't melt the connector again as there is no connector to melt!

narnwv 02-02-2013 11:33 AM

if it's running with the power off, then the you have the 12v hooked to the control, and the control hooked to the 12v+ on the INPUT of the resistor.

REDDINGO 11-24-2015 02:41 PM

I'm about to replace the blower motor resistor and a new pigtail... on my 2001 WJ. limited
I have read several complaints about the new design with the longer cooling extensions "not giving enough power/blowing air"... so I bought the original style.
My question is... How long before the new one might burnout/melt housing and wires again? Thanks

narnwv 11-24-2015 06:04 PM

Quote:

Originally Posted by REDDINGO (Post 32901482)
I'm about to replace the blower motor resistor and a new pigtail... on my 2001 WJ. limited
I have read several complaints about the new design with the longer cooling extensions "not giving enough power/blowing air"... so I bought the original style.
My question is... How long before the new one might burnout/melt housing and wires again? Thanks

My original-style has been running great 5-6 years no problem.

REDDINGO 12-03-2015 12:01 PM

Thanks to all the help provided by you guys and the Jeep forum...Thanks!

It's that time of the year again and I would like to have heat for the trails ahead.

Just finished replacing the blower motor resistor and plenty of air but no heat.

The past three years I always used some bent rabbit wire to hold the blend doors up or down depending on the time of year....

today though...The dual blend doors are positioned up and both heater core tubes through the fire wall are hot.

After cutting through the left back section of the glove box... to access the blend doors...I can feel the heater core area, but doesn't hot or even warm.

Should I flush the system or what might be my next step?

thankful as always


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