cooling system pressure? - 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
Old 04-01-2011, 10:23 PM   #1
Join Date: Mar 2011
Location: Lexington, NC
Posts: 492
user4574 is on a distinguished road
cooling system pressure?

Does the cooling system pressurize on Wranglers like a regular cooling system? Reason I ask, I came home last night and was checking under the hood and my upper hose wasn't hard and was somewhere between hot/warm (able to touch). Coolant levels looked normal in the tank and radiator (after it was cooler). I had just ran the Jeep about 35 highway miles, operating temps around 210, even after coming off highway. I checked within less than 5 min of turning the Jeep off. System is tight with no leaks and coolant is clean.

I am used to the hoses being near rock hard until the system cools off, but I am learning that Wranglers tend to operate a bit differently than other vehicles. I've had my Wrangler since this past Wed so some of the quirks are still new to me. Familiar to Jeeps but new to Wranglers.

'03 4.0 82k.
user4574 is offline   Quote
Old 04-01-2011, 10:29 PM   #2
Abe Froman

5-Year WF Supporting Member
doclouie's Avatar
Join Date: Feb 2010
Location: Was in the mountains, now in Texas
Posts: 3,774
doclouie is on a distinguished road
Mine is the same way. Just make sure you have the radiator topped off as a lack of coolant can cause problems as you can imagine. The pressure cap is a stock 18 psi, but I do not think my system has ever seen that pressure.

2000 Sahara, 3.5" Rubicon Express Lift, 1" spring spacer & 1" Body Lift, 33" or 35" BFG Mud tires, Front & Rear ARB, Rancho 9000 shocks, UCF Ultra High Belly Up, Savvy gas tank skid.

doclouie is offline   Quote
Old 04-02-2011, 06:10 PM   #3
Neil F.'s Avatar
Join Date: Nov 2007
Location: Marlton, NJ
Posts: 6,886
Neil F. is on a distinguished road
The system runs the same as any automotive coolant system. If the temp is normal (210) it is fine. The system runs up to 18 PSI (radiator cap rating)
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.
Neil F. is offline   Quote
Old 04-03-2011, 10:26 AM   #4
Join Date: Mar 2011
Location: Lexington, NC
Posts: 492
user4574 is on a distinguished road
Okay, thanks. I guess I am just used to my WJ with the same motor. Thought they would operate the same.
user4574 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
Cooling System Issues Gregz TJ Tech Forum 4 10-16-2010 06:56 PM
Flush out cooling system motormike86 YJ Tech Forum 5 09-10-2010 08:22 AM
Pete and Repeat: revisit cooling system mudslinger150 TJ General Discussion Forum 16 10-23-2009 05:40 PM
Faulty Tire Pressure Monitor System RobW Tires & Wheels 16 06-09-2009 07:52 PM
Cooling System Problem Black_Jeepers TJ Tech Forum 12 09-17-2007 06:45 AM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 08:57 PM.

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. is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner