Engine temperature.... - Jeep Wrangler Forum
Jeep Wrangler Forum

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

Join Wrangler Forum Today


Like Tree5Likes
  • 2 Post By demarpaint
  • 1 Post By Gold Miner
  • 1 Post By Shark_13
  • 1 Post By Blort
Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-16-2019, 02:47 AM
Thread Starter
  #1
Jeeper
 
HPD2000's Avatar
 
Join Date: Jul 2014
Location: Washington Court House, OH
Posts: 40
Engine temperature....

Thermostat in a 2006 Rubicon just replaced, but the engine is still running at around 235 degrees or so. It's steady at this temp, but is this temp detrimental to the long term health of the engine?

HPD2000 is online now   Quote
Old 08-16-2019, 03:19 AM   #2
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Join Date: May 2011
Posts: 7,136
That's hot. A few things come to mind:

Did you install on OE thermostat or an aftermarket thermostat? I might catch some static for this but over the years I've gotten enough defective aftermarket thermostats to get me to buy only OE.

Did you test the function of the thermostat prior to installing it? EG place it in a pot of water heated to the temperature the thermostat was designed to open at and make sure it worked? If not you could have installed a defect.

Is the radiator properly bled? An air pocket can cause an engine to run hot, or overheat even with everything else working properly in the cooling system.

Is the coolant mix correct? Too little or too much coolant can cause issues.

Is the radiator cap good?

Is the radiator working properly? Good flow, no dirt on the outside clogging fins, clean inside, no rust or scale?

Is the electric fan or fan clutch working properly?

Fan belt if equipped with mechanical fan good, and not slipping?

You've got some things to check. If I missed something it's early someone else will probably add it, but that covered the basics. Running that particular engine that hot for long periods of time is not good. Good luck.
Gold Miner and HPD2000 like this.

__________________
1988 E-150 4.9L 5 Speed Stick
2008 Jeep Liberty Auto Trans
2016 JK Rubicon Hard Rock Auto Trans

God Bless Our Troops
demarpaint is offline   Quote
Old 08-16-2019, 01:30 PM   #3
Supporting Member

5-Year WF Supporting Member
 
Gold Miner's Avatar
 
Join Date: Jan 2013
Location: way up thar
Posts: 674
Quote:
Originally Posted by demarpaint View Post

Did you install on OE thermostat or an aftermarket thermostat? I might catch some static for this but over the years I've gotten enough defective aftermarket thermostats to get me to buy only OE.
This. (and everything else)
HPD2000 likes this.
__________________
'01 Sahara, Original Owner
Miner with a heart of Gold.


Only thing we have to fear is, fear itself....................................... and bears
Gold Miner is offline   Quote
Sponsored Links
Advertisement
 
Old 08-16-2019, 02:20 PM   #4
Commercial Member

5-Year WF Supporting Member
 
Shark_13's Avatar
 
Join Date: Dec 2012
Location: Idaho
Posts: 6,741
All that^^
Plus, how old is the radiator and water pump? If they have ever been replaced, are they stock or aftermarket,?
HPD2000 likes this.
__________________
One-of-a-kind wood shift knobs for sale

https://www.wranglerforum.com/f37/han...s-1175625.html
Shark_13 is offline   Quote
Old 08-16-2019, 02:27 PM   #5
Jeeper
 
Join Date: Jul 2016
Posts: 1,083
235 degrees is excessively hot. If the cooling system is original I would replace every single component with OEM parts. Radiator, water pump, thermostat, and fan clutch. Might as well replace the hoses too.
HPD2000 likes this.
Blort is offline   Quote
Old 08-16-2019, 04:43 PM
Thread Starter
  #6
Jeeper
 
HPD2000's Avatar
 
Join Date: Jul 2014
Location: Washington Court House, OH
Posts: 40
Quote:
Originally Posted by Shark_13 View Post
All that^^
Plus, how old is the radiator and water pump? If they have ever been replaced, are they stock or aftermarket,?
Can't answer the particulars of the radiator and water pump. This is on a Rubicon that I am looking at buying. It's a 2006. It only has 49,700 miles on it. Seems it has spent lengthy periods of time sitting idle.
HPD2000 is online now   Quote
Old 08-16-2019, 04:45 PM
Thread Starter
  #7
Jeeper
 
HPD2000's Avatar
 
Join Date: Jul 2014
Location: Washington Court House, OH
Posts: 40
I appreciate everyone's input. This is a great forum. Very helpful.

HPD2000 is online now   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






All times are GMT -5. The time now is 06:08 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeepģ, 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