2003 TJ overheating - Jeep Wrangler Forum

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

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-12-2011, 03:43 PM   #1
Join Date: Nov 2011
Posts: 2
2003 TJ overheating

Been having a problem and can't figure it out. Need some advise. My jeep's temp usually stays at 200-210 range. After a while at that temp it will shoot up to 255-260 range and bounce back and forth from 210-255. It has done this idling and maintaining 60 mph both. I replaced the thermostat 1st. I did a radiator flush. It continued to do the same thing. I replaced the thermostat sensor next. Thought that solved it but still doing same thing. I thought the sensor for the temp gauge might be out. Before I had a chance to replace it my radiator busted on top. I have now replaced it. I don't think my root cause has been fixed and I am scared to drive it. Any suggestions.
askrenb is offline   Quote
Old 11-12-2011, 06:02 PM   #2
billybobjoe's Avatar
Join Date: Oct 2011
Location: hunkerin down
Posts: 83
By process of elimination, only things left are the water pump and the gauge. How many miles on your water pump?

billybobjoe is offline   Quote
Old 11-12-2011, 07:20 PM   #3
Knows a couple things...

WF Supporting Member
Jerry Bransford's Avatar
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 40,819
Are you burping the cooling system of all air afterward? Bubbles can move around and when they get next to the sensor in the thermostat housing, they can cause the gauge to give crazy indications. Did the thermostat have a little burp hole in it (or did you drill one) and positioned at the top when you installed it to facilitate the system purge its own air out through the radiator?
When you have a choice, buy American.
Jerry Bransford is online now   Quote
Old 11-13-2011, 06:43 AM   #4
Join Date: Nov 2011
Posts: 2
Water pump is original and has 111119 miles on it.
I did place the purp hole on top. I plan on running it today and with the cap off and add antifreeze to it to see if that might get rid off air pockets.
When I ran it last night the heater was blowing cold air. This was not happening before so I assume the heater core isn't getting any circulation.
Thanks for responses. I will change the sensor to gauge next and see what happens. Last I will change the water pump.
askrenb is offline   Quote

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
Need an Outlook Express (2003) guru please Jerry Bransford Off-Topic 1 05-05-2011 03:08 PM
WI: 2003 Wrangler 48k miles $10,500 obo Caseman Classifieds Archive 5 03-27-2011 08:41 AM
Overheating in Ohio cdparmer440 WF New Member Check In 1 02-18-2011 09:05 PM
Should I get a 2003 or 2004 (details in in post) CrunchyTaco Off-Topic 2 10-10-2010 10:11 AM
2003 TJ, gas milage, gearing etc.. help?? 288sunny TJ Tech Forum 5 09-16-2009 02:09 PM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 07:46 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2016 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