AC Direction problem, - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today



Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 07-11-2010, 01:15 PM
Thread Starter
  #1
Jeeper
 
Join Date: Apr 2008
Posts: 16
ricci427 is on a distinguished road
AC Direction problem,

2003 Sahara.

OK guys like everyone else, my air only blows through the defroster.

I have my dash apart right now, and was checking the switch itself, it has colored tubes /hoses coming from it, red, brown, yellow, green and black. Could these be the problem, the brown was is crimped right before a connection which is made behind the glove box. The black hose also disapears some behind the glove box, not sure where it goes, but the others go across the dash to connection in the drivers footwell.

I hear people talking about looking at vacuum hoses in the engine bay, I'm, just not sure where to begin on this, the colored hoses behind the dash, the switch itself, or in the engine bay?

Any help appreciated.
ricci427 is offline   Quote
Old 07-11-2010, 01:25 PM   #2
That WF guy.

WF Supporting Member
::WF Administrator::
 
distortedtj's Avatar
 
Join Date: May 2005
Location: yep right there.
Posts: 21,554
distortedtj is on a distinguished road
Send a message via Yahoo to distortedtj
First pop your hood and take a look at the vacuum line here....driverside engine bay...side of intake manifold.
Most common. If not your issue report back and we'll start weeding out the other places.
Attached Thumbnails
Click image for larger version

Name:	vac line 002.jpg
Views:	247
Size:	235.0 KB
ID:	21492  

distortedtj is offline   Quote
Old 07-11-2010, 01:30 PM   #3
Jeeper
 
Riptide63's Avatar
 
Join Date: Apr 2007
Location: Pensacola, Florida
Posts: 280
Riptide63 is on a distinguished road
I've found rotten hoses at the vacuum canister as well... it's located sort of underneath the battery tray area. Never knew it was there until I started chasing a similar concern. It's more easily found from underneath the Jeep.
__________________
Doug Coleman

2000 Wrangler Sport - "Red" - Stock
1999 Z-28 - "The GLUMAKR" - Not Stock

"Mid-life crisis? Pfffffttt... more like a whole-life crisis."
Riptide63 is offline   Quote
 
Old 07-11-2010, 01:30 PM   #4
Jeeper
 
pokey's Avatar
 
Join Date: Feb 2010
Location: backroads of the Mojave
Posts: 1,107
pokey is on a distinguished road
I would say those are the problem. Those are the vacuum lines. 1st make sure they're all pressed onto the back of that switch good. I don't have the factory manual in front of me but try to trace them and make sure all the connections are pressed on good where they end. The brown crimped one could be the problem. If you're near a dealer they would probably give you a printout of the schematic where the lines go.

I'm not sure where to look in the engine bay but look at the firewall for any hoses that may be coming from it and may be disconnected. Good luck
__________________
__________________________________________
. . . . picking the lines with my twenty-nines . . . .
__________________________________________

'99 sport 4.0 5 speed, top-of-the-line floormats
pokey is offline   Quote
Old 07-11-2010, 01:42 PM
Thread Starter
  #5
Jeeper
 
Join Date: Apr 2008
Posts: 16
ricci427 is on a distinguished road
Distorted - thanks for the pic, two points to note here. Your finger is pointing to the centre of the three connections. This was a good solid connection, the connection to the right, was off totally, and even when reconnected it is a little loose. This splits on a T joint a few inches off the manifold. Though even after reconnecting this, the direction on AC still didn't work would it take time to build up a vacuum in order to work correctly.

Second point, the middle connection that your finger was pointed at, although this was a good solid connection, I followed it I think it came up past the green screw cover for a valve I think. Then it bends down and the rubber makes a transition to a metal tube. At this transition point, the rubber is worn and cracked, possibly enough for a leak.
ricci427 is offline   Quote
Old 07-11-2010, 01:48 PM   #6
▄▌ee▐▀

WF Supporting Member
 
Hardermods's Avatar
 
Join Date: Jul 2009
Location: Kansas
Posts: 1,698
Hardermods is on a distinguished road
I would then follow the smaller on that splits at the T joint, across the back of the engine, over to the firewall behind the battery and below the battery, check all the lines there. Thats a common place for a bad hose/connection.

The middle on that runs over by the green cap and those lines there are for the evap system. While one maybe cracked it could cause a code to come up in your ECM for a Evap leak.





1 - SCREW
2 - VACUUM CHECK VALVE (2)
3 - VACUUM LINE RETAINER (2)
4 - ACCESSORY VACUUM SUPPLY LINE
5 - ENGINE VACUUM FITTING
6 - HVAC VACUUM SUPPLY LINE
7 - INNER FENDER
8 - VACUUM RESERVOIR
Hardermods is online now   Quote
Old 07-11-2010, 01:48 PM   #7
That WF guy.

WF Supporting Member
::WF Administrator::
 
distortedtj's Avatar
 
Join Date: May 2005
Location: yep right there.
Posts: 21,554
distortedtj is on a distinguished road
Send a message via Yahoo to distortedtj
Quote:
Originally Posted by ricci427 View Post
Distorted - thanks for the pic, two points to note here. Your finger is pointing to the centre of the three connections. This was a good solid connection, the connection to the right, was off totally, and even when reconnected it is a little loose. This splits on a T joint a few inches off the manifold. Though even after reconnecting this, the direction on AC still didn't work would it take time to build up a vacuum in order to work correctly.


Second point, the middle connection that your finger was pointed at, although this was a good solid connection, I followed it I think it came up past the green screw cover for a valve I think. Then it bends down and the rubber makes a transition to a metal tube. At this transition point, the rubber is worn and cracked, possibly enough for a leak.
Run a piece of electric tap over the line comming from the manifold to hold it on good. Also run some electric tape over the rubber fitting by the green cap to help it seal.

Try again...if it does work...not your issue and we'll keep going.
distortedtj is offline   Quote
Old 07-11-2010, 02:10 PM
Thread Starter
  #8
Jeeper
 
Join Date: Apr 2008
Posts: 16
ricci427 is on a distinguished road
Distorted - I will tighten the connection that I have found so far, with tape, and possibly a small clip on the one that was really loose of the manifold.

I have to run out to get some tape though as I ran out, I will post later. Also, when I post later I will let you know of some codes that came up during fail on my emissions yesterday, maybe they will help narrow this down. Would something like this cause an engine light, which in turn failed my emissions.

Post later, once taped !!!

Thanks
ricci427 is offline   Quote
Old 07-11-2010, 02:59 PM   #9
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
rrich is on a distinguished road
Blow cigarette smoke through the vacuum line where it attaches to the manifold. Where there's smoke there's a leak.
__________________
It's no wonder the country is falling apart - stupidity abounds!
rrich is offline   Quote
Old 07-11-2010, 03:24 PM   #10
Jeeper
 
osu50sprinter's Avatar
 
Join Date: May 2010
Location: Vail CO
Posts: 158
osu50sprinter is on a distinguished road
hardermods.....that is an awesome diagram! where did you find that? you should post that for every AC problem that someone posts to WF!!!
osu50sprinter is offline   Quote
Old 07-11-2010, 07:30 PM
Thread Starter
  #11
Jeeper
 
Join Date: Apr 2008
Posts: 16
ricci427 is on a distinguished road
Fixed

Distorted thanks for the help, and thanks to everyone else too. The AC now blows through the correct vents, the photo from distorted helped a lot, as did the schematic from hardermods....
It was a simple as the engine fitting, it is still loose but I will be putting a clamp on it to stop any future mishaps.
ricci427 is offline   Quote
Old 07-11-2010, 10:13 PM   #12
That WF guy.

WF Supporting Member
::WF Administrator::
 
distortedtj's Avatar
 
Join Date: May 2005
Location: yep right there.
Posts: 21,554
distortedtj is on a distinguished road
Send a message via Yahoo to distortedtj
Quote:
Originally Posted by ricci427 View Post
Distorted thanks for the help, and thanks to everyone else too. The AC now blows through the correct vents, the photo from distorted helped a lot, as did the schematic from hardermods....
It was a simple as the engine fitting, it is still loose but I will be putting a clamp on it to stop any future mishaps.
the fittings get old and dry rot ...it's just the nature of the beast.

The fittings can be picked up at most auto stores for around a buck.


distortedtj is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
problem after problem... 1991 Wrangler YJ Renegade YJ Tech Forum 2 07-10-2010 10:27 PM
electrical problem...help!!! evas98tj TJ Tech Forum 3 10-10-2008 10:18 PM
42RLE Tranny Problem nicolas-eric TJ Tech Forum 8 09-21-2008 06:29 PM
Heater / Blower Problem 2000 Wrangler dougman1971 TJ Tech Forum 0 09-17-2008 07:56 AM
Has anyone else had this problem? socatevoli TJ General Discussion Forum 10 08-27-2008 12:14 AM





All times are GMT -5. The time now is 08:43 AM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner