Air flow from floor vents, outside vents, not from defroster - Jeep Wrangler Forum
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Old 08-25-2013, 08:00 AM   #1
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Air flow from floor vents, outside vents, not from defroster

I have a 97 tj that has been giving me some issues. The blower on high blows air through floor vents with ease. When I switch the switch to vents, air blows from the outer vents but none from the inside vents. It starts to sound like something is blocking the way of the air. When I switch to blow air throw the defroster no air comes out whatsoever and you can definitely hear the air is completely blocked. All 3 actuators under the driver side adjust when I switch from floor to defroster on the control switch on the control panel on the console. I did notice that both the vent and defroster levers near the actuators were broken, but fixed the with screws listed in other posts. I am just not sure where to start next. Can someone help? Thanks

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Old 08-25-2013, 08:02 AM   #2
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You may have sucked up some leaves, or, like mine did one day, a plastic Wal-Mart bag!

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Old 08-25-2013, 08:06 AM   #3
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Clogged sounds like
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Old 08-25-2013, 08:06 AM   #4
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Any idea how the get it out and from where?
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Old 08-25-2013, 08:53 AM   #5
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I would start here

Clean it out first if there is crap in there

Then here

Take that cover off and get to work
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Old 08-25-2013, 09:12 AM   #6
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Thanks. Today you give me hope fixing this challenge!
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Old 08-25-2013, 09:14 AM   #7
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Check the vacuum line in the intake manifold. When mine slipped off similar results were dealt with. 2 second fix and all was right in the world again.
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Old 08-25-2013, 09:57 AM   #8
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Notorious rob, checked where the air would enter the jeep..not bag, or leaves....a little pine straw. Cleaned. Inside - outside air vent flap closest to passenger side is looking good also. Ideas for the next focus. Sorry this is new to me and I am stumped prior to taking the whole dash out...another option I have never attempted with any vehicle. Ha. Lucky me.
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Old 08-25-2013, 10:00 AM   #9
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Xjman, checked vacuum lines outside vehicle from intake manifold to battery. All looks good and appears working. The vacuum line heads through the firewall on the passenger side my next focus. Ideas?
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Old 08-25-2013, 10:51 AM   #10
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Stumped...
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Old 08-25-2013, 11:15 AM   #11
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My '97 does this too.

What's happening is the actuators are getting stuck and not fully moving into position, which gives a whistling/ blocked air sound. For me it only happens with the fan on high, sometimes you can here then get unstuck and here the door slam shut. Usually though I have to turn the air down then back up.

The solution is probably new actuators.
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Old 08-25-2013, 09:38 PM   #12
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Well here's the deal. I spent about 45 minutes taking the dash out. When I got to a point the metal portion of the dash could come out I noticed a doorway with a cover of a vent. This was where the lever connected to the actuator would open and close vent doors leaving the blower. Well as mentioned earlier in the post I used screws to screw together the broken levers for the defroster and vent actuators. These would have been on the drivers side up under the dash. Well it didn't work...either lever after being rescrewed. So bottom line is the blend doors for the vent and defroster need replaced and further a pain as I still need to finish taking out the top half of the vent for the defroster...should be easy as I can completely see everything, and the blend door for the vents i can attempt another screw or start unscrewing the bottom half of the unit. End the end a time consuming pain, but working closer to my solution. I,appreciate all the help with comments!
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Old 08-25-2013, 09:41 PM   #13
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Freeskier, 100 bones its the bend doors! If your issues are like mine...blenders all the way. I have not mastered to complete procedures and learning as I go but the back on the jeep has little room on it for anything else because of all the removed parts. But it is not that hard just time consuming.
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Old 08-25-2013, 09:42 PM   #14
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You are pretty about working on jeeps! Thanks for the help!

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