A/C / Heat only works on low??? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-03-2010, 08:50 PM   #1
Jeeper
 
ajeepvirgin's Avatar
 
Join Date: Sep 2010
Location: Overland Park, KS
Posts: 204
A/C / Heat only works on low???

Evening!

Just bought a 99 Wrangler sport, love it! Well the heat and air only work on low. When I turn it up it completely shuts up. Guy at dodge said it was the blower resistor??? Bought one and changed it out but didn't fix the problem. Does anyone have any ideas or have the same problem?? Thanks!!

ajeepvirgin is offline   Quote Quick Reply
Old 10-03-2010, 08:54 PM   #2
Jeeper
 
Apshouse's Avatar
 
Join Date: Sep 2010
Location: Owensboro
Posts: 62
Mine only worked on 1 and 3, and on 4 if you wiggled the knob, so I replaced the switch and all worked great, $20 fix

__________________
Donate life
Apshouse is offline   Quote Quick Reply
Old 10-03-2010, 09:14 PM   #3
Newb
 
Join Date: Oct 2010
Posts: 6
Been having similar problems with my 02 Wrangler. Blower doesn't work on the second stop, and the position control won't switch between dash vents, floor vents and defroster. AC turns on and off though. It occasionally switches randomly (maybe after bumps...not sure though). I'm going to buy some new switches to install and see what happens though.
nfortner is offline   Quote Quick Reply
Old 10-03-2010, 09:22 PM   #4
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 10,268
Images: 5
clear sign switch is going bad, relay etc. be sure to check the wires as its a wire/heat build up issue.
__________________
79.96.85.00.01.97.00.97.93.97.95.94
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ
4Jeepn is offline   Quote Quick Reply
Old 10-03-2010, 10:07 PM   #5
Jeeper
 
ajeepvirgin's Avatar
 
Join Date: Sep 2010
Location: Overland Park, KS
Posts: 204
Thanks! 4jeepin... The solutions that you mentioned... Any idea a ballpark figure to get it fixed at a shop?
ajeepvirgin is offline   Quote Quick Reply
Old 10-03-2010, 10:43 PM   #6
Jeeper

WF Supporting Member
 
DerekM's Avatar
 
Join Date: Mar 2010
Location: Orem, Utah
Posts: 450
Same problems I had I fixed two days ago i had a thread on it too. Its the connections on the resistor and/or the vacuum switch. They get dirty and loose so I cut off the harness and connected the wires directly.
__________________
2001 TJ, 4.5" RE, 1" BL, 35" KM2. Black is good.
/l ,[____],
l---L -OlllllllO-
()_)-()_)-o-)_)
DerekM is offline   Quote Quick Reply
Old 10-04-2010, 09:46 AM   #7
Jeeper
 
ajeepvirgin's Avatar
 
Join Date: Sep 2010
Location: Overland Park, KS
Posts: 204
How much did it cost you to get the problem fixed?
ajeepvirgin is offline   Quote Quick Reply
Old 10-04-2010, 09:54 AM   #8
Jeeper
 
mrcarcrazy's Avatar
 
Join Date: Jul 2009
Location: Midland/Odessa, TX
Posts: 3,903
the switch is like 13-18 bucks IIRC> Keep your receipt...it has a 1 yr warranty. My first replacement lasted 6 months. (I can now swap it out in under 5 mins.)
__________________
#2 Jeep http://www.wranglerforum.com/f322/99...ld-819418.html
99 Sahara, automatic.
mrcarcrazy is offline   Quote Quick Reply
Old 10-04-2010, 09:59 AM   #9
Jeeper
 
TyPaine's Avatar
 
Join Date: Sep 2010
Location: Hampton, NH
Posts: 16
Blower Motor Resistor

You can fix this issue very easily on your own actually. The blower motor resistor is bad and it's located right behind the glove box. When you remove the glove box you can access/remove the resistor with one 10mm bolt. The only difficult part is laying on your passenger seat upside down looking underneath the glove bow while doing some sort of contortionist act... you'll get it. Then remove the wiring harness from the resistor but don't forget to pull the little red tab unlocking the wire harness. You can pick up the part at any Jeep dealership or Jeep performance shop for about $15, ask them of their opinion, they'll tell you the same thing.

I just replaced mine 3 months ago, same issues.
TyPaine is offline   Quote Quick Reply
Old 10-04-2010, 02:52 PM   #10
Jeeper
 
ajeepvirgin's Avatar
 
Join Date: Sep 2010
Location: Overland Park, KS
Posts: 204
Thanks Ty, I replaced that and it still doesnt work.
ajeepvirgin is offline   Quote Quick Reply
Old 10-04-2010, 05:45 PM   #11
Jeeper

WF Supporting Member
 
DerekM's Avatar
 
Join Date: Mar 2010
Location: Orem, Utah
Posts: 450
You need a new resistor most likely if it only works at low speeds. You need to pull the control panel apart and look for anything that may be melted. There is also I write up on JP magazine that is helpful.

I will post some pics of mine later today
__________________
2001 TJ, 4.5" RE, 1" BL, 35" KM2. Black is good.
/l ,[____],
l---L -OlllllllO-
()_)-()_)-o-)_)
DerekM is offline   Quote Quick Reply
Old 08-21-2011, 03:46 PM   #12
Newb
 
Join Date: Aug 2011
Posts: 1
Same issue here, my 2001 'appears' to only blows on low. I switched my blower motor resistor ($42) and it did not fix the problem.

However, I started turning the knob SLOWLY from low to high, instead of clicking directly into each 4 positions, and I found the other settings. Low is in position 1 which is perfect. Low medium is between 1 and 2. Medium High is just above position 2. High is between position 2 and 3.

I guess the switch needs to be replaced???

_____
2001 TJ, Black
lanceman is offline   Quote Quick Reply
Old 08-21-2011, 03:53 PM   #13
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,231
Images: 2
Quote:
Originally Posted by DerekM View Post
You need a new resistor most likely if it only works at low speeds.
That's actually backwards... the resistor pack is not even part of the circuit on the fan's high-speed setting, it is bypassed for the fan's highest speed. The resistor pack is only there to provide the lower fan speeds, it's not used for the highest speed setting. If the fan isn't working on the highest speed as well as some or all of the lower speed settings, the problem is most likely with the switch and/or the switch wiring which commonly melts from heat.

__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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
98 TJ too much heat!!! Oldfart TJ Tech Forum 15 07-07-2010 12:10 AM
Paint or heat gun baja Builders Corner 33 04-03-2010 12:37 PM
Any HVAC technicians here? mrcarcrazy Off-Topic 19 02-05-2010 03:23 PM
87 jeep wrangler heat issues. 94cummins YJ Tech Forum 9 12-30-2009 08:10 PM
Heat works, but I'm cold...... wingedone1 TJ Tech Forum 7 12-22-2009 06:23 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 03:16 AM.



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