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Old 07-21-2012, 07:31 PM   #1
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Please help! Front vents not working

Hello,
I am new to the site. I just purchased a 2002 Jeep Wrangler Sahara edition. When I test drove it, the air was working great. When I went to purchase it from the guy, it was just blowing out at the feet which wasn't a deal breaker. He was honest and up front about everything. It started working a little on my way home, but then it stops. The defroster vents seem to works great. The front ones do not.

Is this an easy fix that I can get my father to do or is this going to be something I will need to take to a mechanic?

Another question. The lock or whatever is used in the center console is gone. Is this easily replaceable?

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Old 07-21-2012, 08:01 PM   #2
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What happens when u just turn the vent on to blow in your face(no AC)? Does it work?

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Old 07-21-2012, 08:23 PM   #3
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Talking

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Originally Posted by Leeroy Jeepkins View Post
What happens when u just turn the vent on to blow in your face(no AC)? Does it work?
No air blows on my face. Just the defroster ones and at the feet work, but all were working when I test drove it earlier in the week.
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Old 07-22-2012, 06:41 AM   #4
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The problem is most likely a vacuum leak under the hood. A quick search on this site should help you find a solution.
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Old 07-22-2012, 08:27 AM   #5
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I had what sounds like the same problem. I ended up needing a vacuum line boot that was loose on the engine. It was located near the back of the engine on the driver side. If that one isn't loose or cracked follow that line until you find the leak. This line also runs the cruise control if you have it, so you can try using your C.C. to narrow your problem down. The boot I described seems to be a likely point of failure. Do a search for the problem and you should find pictures, probably even walkthroughs.
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Old 07-22-2012, 08:54 AM   #6
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Thank you so much for the help. I will search more tonight when I have time.

Is this relatively easy to fix and inexpensive? Sorry. I don't know much about these things.
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Old 07-22-2012, 08:59 AM   #7
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If I remember correctly the boot was less than $3. I just took the bad one off when I got to an auto parts store, took it inside and they found me a replacement. It just pulls off of the line with no tools, but it may be tight. Mine wasn't, but that just made the problem more obvious. lol
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Old 07-22-2012, 09:01 AM   #8
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Thank you very much.
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Old 07-22-2012, 09:03 AM   #9
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My 97 does the same thing except it blows through the vent for a second than it sounds like a flap pops closed restricting air from blowing through the center vents. The driver and passenger sides work fine.
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Old 07-22-2012, 09:16 AM   #10
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had the same problem on my 98. didn't even know it had air till i turned it to the lil snow flake. would blow out the defrost or feet, no center vents. i removed the cover under the steering wheel to get access to the 3 accurators. ran em through the settings to make sure they were ok-center one was not. swapped the defrost vac line and the accurator did work so i knew that was good. took note of the lines color and followed it back to the switch-where i found it cut. i figure it must have happened when the PO installed a stero/sat radio. hooked the line to the switch and has worked fine. would look at the accurators to make sure they are good and nothing broke(common prob w/connecting rods-doors) do a visual of lines under hood(sounds like a vac leak since it did work-kinda) and if all looks good look under dash from firewall to vac manafold/switch and from accurator to manafold/switch
note-some unassembly may be required. you can see alot by removing the trim under the steering wheel and also by removing the glove box--if not enough may have to remove center dash-not really that hard.

for the center console . mine had been replaced with the security insert by PO-no key. took the lid off and a lock smith replaced the lock-unfortunatly couldn't key to ignition so have seperate key. cost me all of $20
hopefully your fix will be as easy as mine was-good luck
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Old 07-22-2012, 01:21 PM   #11
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They did start working on my way home from church. Went to get lunch, and they stopped working on the way home.
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Old 07-22-2012, 01:24 PM   #12
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Quote:
Originally Posted by robbiecc View Post
had the same problem on my 98. didn't even know it had air till i turned it to the lil snow flake. would blow out the defrost or feet, no center vents. i removed the cover under the steering wheel to get access to the 3 accurators. ran em through the settings to make sure they were ok-center one was not. swapped the defrost vac line and the accurator did work so i knew that was good. took note of the lines color and followed it back to the switch-where i found it cut. i figure it must have happened when the PO installed a stero/sat radio. hooked the line to the switch and has worked fine. would look at the accurators to make sure they are good and nothing broke(common prob w/connecting rods-doors) do a visual of lines under hood(sounds like a vac leak since it did work-kinda) and if all looks good look under dash from firewall to vac manafold/switch and from accurator to manafold/switch
note-some unassembly may be required. you can see alot by removing the trim under the steering wheel and also by removing the glove box--if not enough may have to remove center dash-not really that hard.

for the center console . mine had been replaced with the security insert by PO-no key. took the lid off and a lock smith replaced the lock-unfortunatly couldn't key to ignition so have seperate key. cost me all of $20
hopefully your fix will be as easy as mine was-good luck
Thank you. The console is missing the entire assembly. I can look through the hole inside to the console. I'm not really worried about getting it to lock, but my elbow hurts when I rest it on the console due to the hole. LOL.
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Old 08-01-2012, 08:39 PM   #13
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Quote:
Originally Posted by Some Farkin Guy
I had what sounds like the same problem. I ended up needing a vacuum line boot that was loose on the engine. It was located near the back of the engine on the driver side. If that one isn't loose or cracked follow that line until you find the leak. This line also runs the cruise control if you have it, so you can try using your C.C. to narrow your problem down. The boot I described seems to be a likely point of failure. Do a search for the problem and you should find pictures, probably even walkthroughs.
Could you explain how to use cruise control to narrow down the problem? My cruise control seems to work fine so I don't know what the problem is. I wish I could fix this myself, but I'm not good at this type stuff.
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Old 08-03-2012, 05:07 PM   #14
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Could you explain how to use cruise control to narrow down the problem? My cruise control seems to work fine so I don't know what the problem is. I wish I could fix this myself, but I'm not good at this type stuff.
The vacuum line that operates cruise control is the same line that the vents change with. Doubtful that's your problem if your cruise control works.
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Old 08-04-2012, 12:19 AM   #15
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Inspect your vacuum lines under the hood, common area for leaks are the end at number 5 falling off, or the line at number 8 cracking.



If it is cracked anywhere then it defaults to defroster
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Old 08-04-2012, 02:25 PM   #16
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Inspect your vacuum lines under the hood, common area for leaks are the end at number 5 falling off, or the line at number 8 cracking.



If it is cracked anywhere then it defaults to defroster
This pic should help loads. Start it up and pop your hood and you might be able to hear the vacuum leak hissing from somewhere on that hose. The boot I needed to replace was number 5 because it was so worn out it just fell off. I would listen or look at the two points Hardermods mentioned first since they're so common.
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Old 08-04-2012, 03:47 PM   #17
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just replaced my vacuum hose last week cost $25.00 for the part. now works great!
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Old 08-08-2012, 04:24 PM   #18
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Thank you for the help. I tried following the diagram posted above, but I cannot figure out what I'm looking at. Can someone look at these pics for me and see where I need to be looking?
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Old 08-08-2012, 04:25 PM   #19
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Old 08-08-2012, 09:43 PM   #20
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If your cruise control is working, I would probably start with the 2nd pic, connection "8" but thats the line you need to follow and check for any cracks or breaks.
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Old 08-28-2012, 11:25 PM   #21
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Quote:
Originally Posted by Jessica08 View Post
Jessica. Did you solve your problem? I got the same thing going on.
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Old 08-29-2012, 11:50 AM   #22
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I got the broken hose at #8 on the diagram, but I can't see where it goes. I got a empty hose where I think the vac canister should be. Uh-Oh.
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Old 08-29-2012, 02:09 PM   #23
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That hose you circled isn't broken. That's the drain for the a/c. The connection number 8 is further down and tucked into the frame right below the battery
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Old 08-29-2012, 02:50 PM   #24
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That hose you circled isn't broken. That's the drain for the a/c. The connection number 8 is further down and tucked into the frame right below the battery
Got it! Thanks a million! I cut off the split end and stuck it back on. Now everything works as it should. That thing was really hidden. I got it from under the truck.

I posted some pictures in for the next person that can't find it.
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Old 08-29-2012, 05:02 PM   #25
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Glad you got it fixed. I took some pics of it that look just like yours I was getting ready to post them to help you out.
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Old 08-31-2012, 09:50 AM   #26
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Bravo!!!

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Originally Posted by Kewrock View Post
Got it! Thanks a million! I cut off the split end and stuck it back on. Now everything works as it should. That thing was really hidden. I got it from under the truck.

I posted some pictures in for the next person that can't find it.
A great big thank you to Kewrock and Hardermods for helping me fix a problem I didn't know I had. I havent used the A/C all summer (usually go nekkid), but I tried it yesterday & it took almost 10 minutes to start blowing out of the dash vents. I crawled underneath, pulled off the connector under the battery tray, cut the split off the connector, and now it's back to normal. Thanks for all the info, you guys are great!!
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Old 08-31-2012, 12:34 PM   #27
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Quote:
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Thank you for the help. I tried following the diagram posted above, but I cannot figure out what I'm looking at. Can someone look at these pics for me and see where I need to be looking?
When searching for a vacuum leak, wet a couple of your fingers.
DO NOT PLACE YOUR FINGERS NEAR ANY MOVING PARTS !!!
As you move your fingers along the areas mentioned previously, once you find the vacuum leak, your finger(s) will feel a little cooler.

Works for me.

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Old 09-04-2012, 04:52 PM   #28
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I had a local mechanic look at it, and he said all the hoses, etc. looked brand new, and he couldn't find a leak in them. He said it is in the vacuum canister. He also said that was causing my check engine light to come on for an emission leak. My check engine light went off, but now the air still doesn't blow out the front vents. He said to take it to a Jeep dealer so they could pinpoint the problem in the canister. Anyone know anything about this? I'm clueless. LOL.
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Old 09-04-2012, 07:02 PM   #29
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Quote:
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I had a local mechanic look at it, and he said all the hoses, etc. looked brand new, and he couldn't find a leak in them. He said it is in the vacuum canister. He also said that was causing my check engine light to come on for an emission leak. My check engine light went off, but now the air still doesn't blow out the front vents. He said to take it to a Jeep dealer so they could pinpoint the problem in the canister. Anyone know anything about this? I'm clueless. LOL.
What code is popping, did he say? Because I have an engine light on for P0455(Evap leak). Sealing the vacuum curcuit for the vents didn't correct it.
I don't think the two systems are connected.
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Old 09-04-2012, 08:17 PM   #30
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What code is popping, did he say? Because I have an engine light on for P0455(Evap leak). Sealing the vacuum curcuit for the vents didn't correct it.
I don't think the two systems are connected.
It was that same code. He fixed that somehow, but the vents still aren't working. I don't know anything about the canister, but I believe he told me there were like five different things in that canister and if I took it to a Jeep dealer they could pinpoint it. He is a mechanic that comes into our store so he checked it out for free and fixed the one problem with the check engine light (well at least for now. I think he just put some electrical tape on whatever the problem was so hopefully that is fixed for good.). I don't know anything about this so I was confused as to what he was talking about. Haha.

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