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Old 05-26-2011, 09:29 PM   #1
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Blower not working

Recently the fan on my 2001 TJ stopped. It does not work on any speed or on heat or A/C. I pulled the blower motor and straight wired it to the battery. It worked. I also pulled the speed selector switch. I ohm the switch. It appeared to be ok. I also jumped the connector... nothing. I had 13 volts on the speed selector connector. I checked the resister. It appeared and ohm good. It seems like it should just be a fuse, but all I can find are good. I'm started to get anoyed. I really love my TJ, but this humid Tennessee spring has me thinking about a Prius! Help!

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Old 07-13-2011, 10:51 AM   #2
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I have a 2000 TJ, and one fan speed doesn't work. Odd. I'll repost if I figure it out.

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Old 07-13-2011, 11:14 AM   #3
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I had the same problem here is what I did. I replaced the resistor, didn't work. I replaced the selector switch worked. For giggles I put the old resistor back in, didn't work....scratch head...put new resistor back in, worked. So replace both the resistor and selector switch. I have a new blower that I bought but don't need if you need it.
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Old 07-13-2011, 11:56 AM   #4
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Quote:
Originally Posted by acAZjeep View Post
I have a 2000 TJ, and one fan speed doesn't work. Odd. I'll repost if I figure it out.
When just one fan speed doesn't work, that is typically caused by the resistor pack.

When no fan speeds work, it is probably the fan speed switch or a fried wiring harness as happens on older TJs.
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Old 07-14-2011, 12:17 AM   #5
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Blower?

My 01 the number 2 speed didnt work it was the blower switch.
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Old 07-17-2011, 05:40 PM   #6
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Quote:
Originally Posted by acAZjeep View Post
I have a 2000 TJ, and one fan speed doesn't work. Odd. I'll repost if I figure it out.
I replaced the motor resistor and the problem persists. I then replaced the switch on the dash (see pic), and all 4 setting works.
I put the old resistor back in, and all 4 still work.

Ended being a $25 part from the dealership. Not bad.
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Old 07-21-2011, 07:17 PM   #7
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Fan speeds. Only highest speed works.

Glad I found a thread that is related to my problem.

I have a 97 TJ and just got back inside after trying to solve the blower fan problem, so came directly on the forum looking for an answer.

My fan is the 4 speed knob and climate control is the old slider type bars.

My first 3 speeds don't do anything and the 4th one is full blast.

I just replaced the 4 speed switch and have the same problem.

I'm reading about a resistor (or resistor pack?). Where is this located? Would like to try changing that next.
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Old 07-21-2011, 08:47 PM   #8
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The '97 TJ's resistor pack is up above the passenger-side footwell, screwed to the HVAC plenum with two screws. Remove the kick plate to gain access to that area. I wouldn't be surprised if you find some melted wiring leading to the resistor pack, that's a common issue with early TJs. If that's what you find, you'll need to splice in new wiring and install a new resistor pack. It happened to my '97.
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Old 07-21-2011, 10:07 PM   #9
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Had the same issue on my (new to me!) 04.

Replaced the resistor ($20 off eBay) and now allnfour settings work like new!
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Old 07-22-2011, 06:41 AM   #10
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Thanks!
I'll take a look at it this morning.
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Old 07-22-2011, 10:02 AM   #11
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OK. Got out there this morning before the temp hits 100+ today (we may break some records) and checked all the fuses (good) and the wiring for any melting (none).

Then removed the resistor. Seems there is just the slightest bit of rust and just an iddy-bit of foreign matter on/in it.

I'm thinking - maybe - this might be the problem.

I've included some pics to show you that I'm being sarcastic. I was pretty shocked when I saw it. I bought the Jeep last year and am just noww getting to all the little things on it that don't work, or don't work correctly. I'm pretty well finished with the major issues.

My question is now this...

I'm unfamiliar with parts manufacturers and found 2 being offered on feeBay. One is SMP and the other is Dorman/Techoice. SMP is half the price of Dorman.

Any real difference to a part like this? Or is one manufacturer head and shoulders above the other? I like to save money, but not if it means buying a part that is useless in a month.

By the way, thanks for the previous help in locating the problem with the blower speeds.
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Old 07-22-2011, 08:16 PM   #12
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I've not heard of those brands. I got the part at AutoZone (Duralast brand), and it was in-stock and around $40.
See link:
A/C Heater Blower Motor Resistor | AutoZone.com

And yeah...that part is gnarly!
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Old 07-25-2011, 07:18 PM   #13
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I ended up ordering the Dorman/Techoice off of feeBay for $21.00 delivered. AutoZone wanted $42 + tax. Would have ended up being about $45.

Came in today and installed. Working like a champ.
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Old 08-10-2011, 11:52 AM   #14
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I'm iffy ordering this thru ebay, but it doesn't seem to be that more expensive at the local autoparts store.
A/C Heater Blower Motor Resistor | 2002 Jeep Wrangler 4WD 6 Cylinders S 4.0L SFI | AutoZone.com
Advance Auto Parts: Search Results for blower resistor
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Old 09-19-2011, 07:28 PM   #15
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Sorry if this is already answered in here, but I didn't get it. So my question is if the blower motor stopped working all together, should I start by replacing the resistor or the control panel?
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Old 02-12-2012, 05:01 PM   #16
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Jerry - You had mentioned that if the blower fan simply didn't work at all you should look into replacing the switch plug. I have replaced the switch and the resistor and still no fan. Both of the fuses (behind the glove box and under the hood) appear to be working. Where can I find the blower fan to test it?
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Old 02-12-2012, 07:07 PM   #17
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Newbie Jeep owner here - 2000 TJ w/2.5. Got the TJ for a song, replaced engine with a rebuilt one then had the blower motor problem (high speed only and no speed) when it was all back together. Followed the great advice on this forum and replaced resistor, blower switch, then control module (that had the burned wires) then no speed at all. Did the rewiring thing with the pig-tail still no change. Finally tapped on blower motor and it ran. Replaced blower motor and it ran OK then ran at high speed without the select switch being on. Examined the plug at the blower motor and found it a little corroded - cleaned it and everything works fine.
Had 2 occasions when the blower motor just started running on high since then and wiggled the plug at the motor to stop it.
I picked up another connector at the bone-yard from a Cherokee and have it on hand if the problem reappears or persists.
Now I am wondering if all I needed in the first place was the plug for the blower motor though I am not upset about the control module because the connector was burnt and some plastic was melted.
Bottom line - my recommendation is to check the connector at the blower motor as an early step in the troubleshooting process. It is only 2 wires and maybe the 12V for the motor is getting a direct ground through the connector or not which could be the source of some problems.
Now off I go to get used to or improve the handling on this TJ with 31X10.50 tires. At least I have heat now.

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