Broken Heater? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ 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 12-11-2008, 09:24 AM   #1
Newb
 
ddurand21's Avatar
 
Join Date: Nov 2007
Posts: 3
Broken Heater?

My 1994 Wrangler just started to blow cool/cold air out of the vents this morning. I had the heater on and she was fully warm when I switched it on. Could this be that the heater core just needs to be cleaned or could it be something more serious?

ddurand21 is offline   Quote Quick Reply
Old 12-11-2008, 11:38 AM   #2
Jeeper
 
tn-yj's Avatar
 
Join Date: Aug 2008
Location: Georgetown TN
Posts: 160
I would have to lean towards the heater core. Do you flush your radiator regularly? Im not well versed in this but that would be my bet

__________________
My g/f ask often: Do you love your Jeep more than me? My reply: Baby do you really have to ask, you know I hate telling you yes when you ask...
tn-yj is offline   Quote Quick Reply
Old 12-11-2008, 11:56 AM   #3
Really?

WF Lifetime Member
 
ccain's Avatar
 
Join Date: Feb 2007
Location: SoCal
Posts: 6,453
Images: 9
More than likely it's the heater control valve (if your Jeep still has one). They are usually vacuum controlled and, you know as well as I do, YJ's are notorious for vacuum problems. The extreme hot and cold makes the plastic vacuum lines brittle and they break real easy. And sometimes the diaphragm inside the HCV goes bad.

You may also want to check your thermostat.

Good luck.
ccain 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
AC & Heater Won't Blow Through Dash Vents BillD TJ Tech Forum 44 09-25-2013 12:47 PM
heater problem hank1 TJ Tech Forum 2 11-13-2008 05:35 PM
Heater / Blower Problem 2000 Wrangler dougman1971 TJ Tech Forum 0 09-17-2008 07:56 AM
Heater Problems? Giancarlo TJ Tech Forum 4 12-06-2007 05:23 PM
Lunchbox Lockers and broken axles? U.S.MarineLJ TJ General Discussion Forum 14 03-12-2006 01:21 PM


logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid
» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 11:21 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