So I was driving my Jeep today and....the AC went out - Jeep Wrangler Forum
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Old 08-17-2010, 11:55 AM   #1
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So I was driving my Jeep today and....the AC went out

I was driving along in the 100 degree weather and ummm....the ac stopped blowing.....It's not blowing hot air or anything....it just stopped blowing....so i was wondering what fuse I should be checking and what else I should check to make sure it isn't a major problem?

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Old 08-17-2010, 11:58 AM   #2
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forgot to mention that it is a 2001 Jeep Wrangler

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Old 08-17-2010, 12:00 PM   #3
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Look at the diagrams on all the fuse boxes, it should list off which fuse is placed where. Or check a Haynes or Chilton guide, which you really should have.

If its not a fuse, then it could be the switch or relay.
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Old 08-17-2010, 12:07 PM   #4
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Could be the blower motor resistor as well, is it blowing on any settings like heat as well or just dead when you run the AC?
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Old 08-17-2010, 12:08 PM   #5
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it doesnt seem to be a fuse (atleast the ones i checked).... where are the switch or relay located (sorry, I'm not by any means a mechanic)
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Old 08-17-2010, 12:10 PM   #6
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It is completely dead on all settings
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Old 08-17-2010, 12:15 PM   #7
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Sounds like the fan switch itself (the knob you move for the fan settings) or the relay. You'd have to consult a Haynes or Chilton guide, or wait for someone here to tell you where it is.
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Old 08-22-2010, 03:40 AM   #8
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happened to me too

I have the EXACT same problem with my 2001 Jeep Wrangler Sport. Only thing is mine stopped blowing about 8 months ago. I checked the fuses, and they looked fine, but just to be safe, I swapped out all the ones that have to do with that part of the Jeep.

About 5 weeks after it stopped working, I hit a pot hole, and BAM! the dang thing started blowing again...and stopped as soon as I turned the engine off and hasn't worked again since...

I looked in the Chilton and Hayes books and they were not really that helpful, so I am hoping someone around this site has gone through this before and can help both of us out.

I would rather not start taking my dash apart if I don't have to, but if I have to I will!
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Old 08-22-2010, 03:47 AM   #9
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It's one of two things, Blower Resistor or the Rheostat Switch itself.

Blower motor is also a possibility, but if it worked in between instances, I'd look at the other two.
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Old 08-22-2010, 01:12 PM   #10
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If the fuses are ok like Az said check the fan speed switch. If it doesn't work at all the speed switch is bad or just as likely you have a melted connector back there. Forget about Chilton or Haynes and get a factory service manual published by Chrysler for every year Jeep. Check ebay. It isn't to difficult to get back there and access the HVAC controls. Do a search hear. Pry up the defrost vent cover along the windshield, remove the two screws. Remove the ashtray, remove screw behind it. The large plastic dash bezel covering the nobs pulls straight off. From there you'll be able to figure out how to remove the control knob unit and check the connections behind. There are 2 connectors, one on each knob ( fan and climate control). If either is melted that's probably your problem. If not the switch itself. Good luck.
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Old 08-22-2010, 01:56 PM   #11
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Where is this "Blower resistor" ? My '02 works on speed 3 and 4 but not 1 or 2. The switch is good and jumpers confirm that only the 2 Hi speeds work so it must be this resistor thingy but where in the heck is it?
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Old 08-22-2010, 02:03 PM   #12
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Disregard LOL searched about 10 times using different keywords and finally found an '02 pic of resitor location.
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Old 08-23-2010, 03:00 AM   #13
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the resistor for my 98 wrangler sport is under glove compartment just remove some screws under that and the black cover should come off you should then see the resistor held in by 2 screws take those off then it should come off then just unclip the clip n there you go
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Old 08-27-2010, 11:10 PM   #14
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Quote:
Originally Posted by pokey View Post
If the fuses are ok like Az said check the fan speed switch. If it doesn't work at all the speed switch is bad or just as likely you have a melted connector back there. Forget about Chilton or Haynes and get a factory service manual published by Chrysler for every year Jeep. Check ebay. It isn't to difficult to get back there and access the HVAC controls. Do a search hear. Pry up the defrost vent cover along the windshield, remove the two screws. Remove the ashtray, remove screw behind it. The large plastic dash bezel covering the nobs pulls straight off. From there you'll be able to figure out how to remove the control knob unit and check the connections behind. There are 2 connectors, one on each knob ( fan and climate control). If either is melted that's probably your problem. If not the switch itself. Good luck.
HEHEHE.....found it......melted connector.......now where can I get one of those..... the Stealership no longer carries them.....
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Old 08-28-2010, 12:57 AM   #15
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I only have high fan speed right now in my 99 other 3 options are slow
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Old 08-28-2010, 04:44 AM   #16
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Junk yard are good for parts try that or u can order it from a really good parts place in rhode island 401-273-1860 they wer really helpful
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Old 08-28-2010, 06:58 AM   #17
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Talon282 .... only high speed on the fan is a classic indication that the resistor needs replacement
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Old 08-31-2010, 01:24 PM   #18
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HEHEHE.....found it......melted connector.......now where can I get one of those..... the Stealership no longer carries them.....
Here's what I did: (This is for the connector on the climate switch, knob on the right with 3 wire connecter on back. I think you can still get the fan switch connector)

If you can't find it, which I couldn't, I cut the three wire connector off, broke it open and brought one of the female spades to Carquest. They had an exact match (about 3 bucks for a box). I made a pigtail with them, some short wire lengths and solder. ( make sure you use the right gauge, 12 for the fan and ground and I think 18 or 20 for the light green a/c wire). Make sure they slide onto the mode switch tabs nice and tight. then wrap each with electrical tape because theres no more plastic between them. So far so good, its been about 4 months.

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