Thank you thank you thank you for this write up with the photos.
Just did mine in 15 degree weather. Thankfully it was a quick job, although that green wiring harness was clipped onto the body with plastic plugs. A quick pull allowed me to pull the sensor, along with the green clip, under the floor light space. In and out, 20 - 30 minutes. Now for a mug of coffee and some breakfast.
Its likely the switch. On hi (4) the resistor is by-passed completely. With the switch on hi test for continuity between the top 2 terminals. You can test the blower by jumping the top 2 terminals of the connector. Here is a pic of the connector to help. It is #1 & 5 below that controls the hi speed.
20-30 minutes he must have been on the hustle...but he did say it was 15 degrees!
Took me about 45...one of those infomercial gooseneck ratchets would have shortened the time dramatically...hmmm excuse to buy tools...most of the time was spent getting the connector apart...if the manufacturer had spent as much time on that connector as in developing the resistor...maybe it wouldn't need replacing.
Great write up! Easy DIY project. Plug to www.wermopar.com for the replacement part.
Boundless! Great post and thanks for the pics. This is a post that just keeps giving. I have a 2006 Rubikon Unlimited and lost all speeds except 'hi'. Just knowing the location of this resistor was priceless. A few knuckles scraps later and it was replaced. For those yet to do this fix, go ahead and unscrew the 1 or 2 wiring harness screws under the fan motor to give some slack. Also, that green wiring harness connector in the photo was actually attached to the fan assembly, but will slide up (hard pull) and give you the slack you need to get the resistor out. Without removing that connector I couldn't get the resistor out (not enough play in the wires). Again thanks for the effort in taking the pics and for others who posted there experience as well. Great Forum!
one note some time later my blower motor went out and I tried out a few after market blowers before I found one that was not NOISY. Maybe worth while with original.
Satellite Bch, FL
2005 Jeep Wrangler Unlimited (LJ) 6cyl, 4spd auto, dana 30/44 3.73, rear trac-loc, hard top, BFG KM2 35/12.5 x 15 on rattle can black stock Ravine wheels & 1.5" spacers, trimmed flares, budget PA 1" BL & RC 1" MML, Ford Explorer roof rack, Hella e-code headlight housings, 55 watt DDM HID Hi/Lo 6000k, EBC Yellow Stuff front brake pads, Platinum P4 battery, Rusty's 3" 305s front and 303s rear springs, RC rear track bar bracket and Hella 500FFs with DDM's 55watt 6000k H3 HIDs on windshield hinge brackets. Currie's front upper and lower control arms. Hummm whats next? Building a Dana HP30 with 4.88 and ? locker http://www.canddautocenter.com/
The switch has been jacked on the Jeep for a couple years now and always assumed it was something major. It has been unbelievably hot already here in northwest Florida and I was tired of sweating my *** off and only have the high speed work for the AC.
As others have said...it was a pretty big pain in the *** BUT after a Sam Adams and a sweat soaked shirt I got the thing done!
In all truth, a presidential visit to Pensacola is usually more trouble than it's worth. I'd rather have a V-8.
In my case it was 1 and 2 speed that went. 3 and 4 were fine. I hear all sorts of combinations of 1, 2 and 3. But it appears 4 is wide open and no resistance so it rarely goes if its a resistor I think. Its often something else.
Worked perfectly. After procrastinating for over a year I finally fixed this. Took approximately a half hour; most of the time spent trying to remove and re-attach 2 bolts (find a friend with small hands if you don't have swivel socket, I had neither).
I'm trying to get that resistor out (already got the 2 screws out...plus 2 more to get some wires out of the way), and the damn thing just seems too long to get out of it's slot. I'm still struggling with it, but started too late and may have to shelve things for the night. Any suggestions for how to gain a little more wiggle room so I can slide that thing the rest of the way out?
OK, I slid the little green thing up and off, and it's now out of the way, and this gave me the room to get the resistor out of the slot. It seemed like I was home free, but now I can't get the little red tab to slide up. It looks like it kind of snaps into place. What's the trick to this???