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Old 03-12-2010, 03:22 PM   #1
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heater vent don't work

i have a 1998 jeep wrangler and only the defroster works. I don't have any air coming from the dash vents or floor vents. can does anyone know what is wrong.

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Old 03-12-2010, 03:34 PM   #2
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Maybe it has to do with your grammar??? Just joking dude. I'll bet it has to do with your climate control dial. They can get a little punchy and not catch.

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Old 03-12-2010, 03:39 PM   #3
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Well, It could be that, it could also be the control module or even the blower. And if it is a control module, you can replace the pieces that go in the module itself instead of paying a ridiculous amount for a whole new module. And I go to RockAuto Auto Parts
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Old 03-12-2010, 08:09 PM   #4
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does anyone no where the actuator, vacuum on a 1998 jeep wrangler
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Old 03-12-2010, 08:37 PM   #5
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check the vacuum modulator on the drivers side floorboard. Mine did the same thing and I fixed it with a sheet metal screw. If you do a search on the topic under heater, I think you will even find a diagram of the modulators.
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Old 08-14-2011, 10:47 AM   #6
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luv my jeep,but i cant figure out my heating problem. Tested the blower motor,replaced the blower switch and the resistor checked the fuses and still nothing . Any help please! New here
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Old 08-14-2011, 07:18 PM   #7
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If the other fixes don't help, try tracking down the vacuum lines.
Thread link below.
http://www.wranglerforum.com/f5/vacu...ry-107278.html
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Old 08-14-2011, 09:07 PM   #8
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i had the same issues. The c/c stopped woking too. It was a vacuum leak. easy cheap fix. I started a thread a few weeks back that has pictures. Good lucK!
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Old 08-15-2011, 10:35 AM   #9
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thank you for the info, found that my heater / ac control switch was melted. Strange to me how that would happen. Now the question is how to fix so it doesnt happen agian. And still not quite sure if that will fix it.
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Old 08-15-2011, 12:10 PM   #10
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1st-pop the covers fron under the steering wheel-looking towards the center you'll see 3 actuators-top is dash, middle is defrost and bottom is floor. start the jeep and move the selector around and see if anything moves. if it does, check the arms to make sure not broken/disconnected. if not, make sure hoses are connected to the actuators-top/bottom have 1, middle has 2(thin and colored-look like wires, not hoses) if connected, remove the glove box and you'll see a connector with a bunch of colored hoses to it-make sure it's tight and connected.
this is as far as i made it as my problem was at the connector(1 hose cut) if it's connected and looks good you'll have to keep going and disconnect, remove center dash and look at the switch. this is about as far as i can help as i didn't need to go past the connector. sure others can guide you farther.
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Old 10-27-2011, 08:37 PM   #11
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2002 two problems

First my heat/ Air vent do not work. I have plenty of air blowing but not in the location the switch is in.Second my air bag light is on. Is there a test to find out if it is the switch on the console or the module.
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Old 10-28-2011, 09:31 PM   #12
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May '02 has the same problem... only defrost works; happy I saw this post.
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Old 05-07-2012, 04:58 PM   #13
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My 97 has a similar problem and found that the top actuator is not hooked up and can't figure where it connects. The rod is coming out of it but didn't see any place to hook it to. Anyone have picture or can tell me where to hook it. Thanks.

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