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Old 09-04-2012, 02:55 PM   #1
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heater blower motor only works on high

I know this is most likely some blown resistors on the motor, but tis a jeep and I am quickly realizing not to assume anything.

Is there a right up on how to replace this? Is there a better blower motor to get?

Thanks for the help. This is a great forum.

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Old 09-04-2012, 03:10 PM   #2
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I have same problem and would want to get it fixed if it is cheap.

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Old 09-04-2012, 04:05 PM   #3
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Ditto.....same question here.
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Old 09-04-2012, 04:34 PM   #4
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yeah, sounds like the blower motor resistor. thoes tend to go out from time to time. its behind the glove box somewhere. im sure there is a write up somewhere for it.. did all of the other settings go out at the same time? or one by one?
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Old 09-04-2012, 04:40 PM   #5
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I just got the jeep a week ago. I noticed that it only worked on high. I don't know if it was dead when I got it or not.
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Old 09-04-2012, 04:43 PM   #6
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its probably the blower motor resistor. they go bad often
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Old 09-04-2012, 04:47 PM   #7
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I had the same problem and replaced the blower motor resistor and the problem was still there. I then replaced my blower motor control switch and problem solved. This is
actual dial you turn your a/c on and off with.

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Old 09-04-2012, 05:18 PM   #8
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Most likely it is the resistor as indicated. 97-02 do have issues with the switch. Jiggle the switch. 03-06 switch problems are not common.
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Old 09-04-2012, 05:26 PM   #9
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mine did same and quit. havent had air for 2 years. Carhartt is my heater and no doors is my a/c
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Old 09-04-2012, 07:12 PM   #10
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I had the same thing. I bought a switch first but that didn't fix it. Looked up with crossed eyes and could see the resister was toast as well as the plug. Replaced the resister and did away with the plug by putting individual terminals on the wires. All is good.
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Old 09-05-2012, 10:00 AM   #11
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Jiggled the switch and it works. It's a 2000 tj. So I guess a new switch is in order in the future
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Old 09-05-2012, 12:28 PM   #12
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I installed one from NAPA and it had the exact same name and number on it . cost me like 14 bucks . I found it easy 5 minute or less job . I just removed the glove box , the under dash light . then pull the red lock on the wire connector then depress the regular latch on the plug . I found an 8 mm ratchet wrench worked the easiest to get the two screws out . Just the opposite to install . it is just about behind the under dash light on my 05 . You can see some of it through where the glove box was and the rest from under the dash looking up .
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Old 09-05-2012, 03:42 PM   #13
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I have the same problem, only works on high. Could it be a fuse on mine though? I checked the fuse box in the glove compartment, it seemed fine. Is there another fuse in the box under the hood I could check before I replace the resistor? I'm new to this, so I don't know much...but I'm trying to learn
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Old 09-05-2012, 03:47 PM   #14
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Resistor is by passed and goes directly to the blower motor on high the resistors are what slows it down as in the first 3 speeds
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Old 09-05-2012, 03:50 PM   #15
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HEY THERE i got a 98 tj 2.5l i have had for ten yrs lately now and again there is a slight hesitation while driving any ideas
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Old 09-05-2012, 03:51 PM   #16
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my blower motor does that as well new ones r only about 65.00
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Old 09-05-2012, 03:53 PM   #17
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Quote:
Originally Posted by Sarah325 View Post
I have the same problem, only works on high. Could it be a fuse on mine though? I checked the fuse box in the glove compartment, it seemed fine. Is there another fuse in the box under the hood I could check before I replace the resistor? I'm new to this, so I don't know much...but I'm trying to learn
There are no fuses associated with the individual fan speeds. It's common for resis tor packs to fail here (and on other makes and models). The fan speeds are controlled by going through a different resistor for each speed setting. The individual resistors go but high speed does not have a resistor.
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Old 09-07-2012, 10:09 AM   #18
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Quote:
Originally Posted by Neil F. View Post
There are no fuses associated with the individual fan speeds. It's common for resis tor packs to fail here (and on other makes and models). The fan speeds are controlled by going through a different resistor for each speed setting. The individual resistors go but high speed does not have a resistor.
Thanks Neil. Thats the information I seem to be getting over and over again in my searches. Just wanted to see if maybe someone here thought it was something different. Thanks again for your help!
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Old 09-07-2012, 10:54 AM   #19
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10 minutes and 20 bucks would of answered an awful lot of questions for ya days ago .
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Old 09-07-2012, 04:07 PM   #20
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Well I fixed mine! 20 bucks yes. 10 minutes? No way. That shit was STUCK on there and the screws were a pain to remove. The thing was fried. The speeds work, but now I just discovered a new problem....Air only blows from the windshield defroster. Any insight how to fix this one? I appreciate the help!
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Old 09-08-2012, 10:41 PM   #21
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where can I find the blower motor resistor for an 05 SE, and how much would it cost
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Old 09-09-2012, 02:39 AM   #22
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Sarah 325, if you have no vacuum to your HVAC system, the default position is for your defrost to be on. Sounds like your issue. Check the connection on the engine side of firewall. Check for cracks, but also check connections accessible behind the glove compartment
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Old 09-11-2012, 07:08 PM   #23
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Yeah I've been trying to find something, but can't see anything yet. I was trying to find a diagram of my hvac system somewhere but having no luck with that either. Gonna take another look at it this weekend! Supposedly there is supposed to be a sticker diagram under the hood, but mine is missing? If anyone has information for an '04 X that'd be awesome! Thanks a lot Alaska for the info!!
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Old 09-11-2012, 07:31 PM   #24
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Ebay. Between $14 and $20.
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Old 09-11-2012, 09:49 PM   #25
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Quote:
Originally Posted by Sarah325 View Post
Yeah I've been trying to find something, but can't see anything yet. I was trying to find a diagram of my hvac system somewhere but having no luck with that either. Gonna take another look at it this weekend! Supposedly there is supposed to be a sticker diagram under the hood, but mine is missing? If anyone has information for an '04 X that'd be awesome! Thanks a lot Alaska for the info!!
Use the search...........diagrams and poctures posted in the threads..........http://www.wranglerforum.com/search....archid=6338809
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Old 09-11-2012, 11:35 PM   #26
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I tried and didn't come up with much. I found this diagram...but not really sure what I'm looking at. [IMG][/IMG]

Sorry for all the novice questions, but you guys have been a great help.
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Old 09-12-2012, 12:14 AM   #27
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Did you check the vacuum house goes through the firewall? It is right next to the heater core hoses that go from the radiator to the firewall. There should be a connection in the engine compartment right next to the firewall.

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