Thermostat change -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep Wrangler Forums > JK Wrangler Technical Forum > Thermostat change

JKS Grand Cherokee WJ, Adjustable Front Trackbar 1"-6Teraflex JK HD Hinged Carrier & Adjustable Spare Tire FREE, FREE, FREE EVENT!! Save big on Lockers now till Apri

Unread 11-23-2013, 07:54 AM   #1
Registered User
Join Date: Aug 2012
Posts: 394
Thermostat change

I accidentally posted in general forum figured I would re post here since this is a JK topic. Anyone out there running a 180 degree t-stat, if so for how long and with results? After talking to RIPP they have tested them and recommend the swap. One of their guys told me that it was standard for them to change JK t-stat from stock to 180. I am thinking about making the change just wondering if any of you have ran the 180 t-stat for a few miles and with what results. Also anyone getting a P0128 in cold weather for not warming up fast enough?

mello is offline   Reply With Quote Quick reply to this message
Unread 11-23-2013, 08:54 AM   #2
Registered Voter w/ID
HappyTrails's Avatar
2008 JK Wrangler 
Join Date: Nov 2008
Location: West Georgia
Posts: 2,877
Not sure about this. I haven't done a t-stat change yet.
Post this question in this thread (RIPP SC-only thread) and see what answers you get:
2008 2-dr Rubicon, auto,
RK 2.5" Max Travel, Rancho 9000XL shocks, 37" Nittos, 5.38's, RR skids, Warn VR8000-S.
RIPP Gen 2 Stg 2 Supercharger.
Political Correctness offends me.
HappyTrails is offline   Reply With Quote Quick reply to this message
Unread 11-23-2013, 10:14 AM   #3
Registered User
2007 JK Wrangler 
Join Date: Aug 2007
Location: San Jose, CA
Posts: 2,160
TO meet emissions and get the mileage we do get, don't lower you engine's temp. It's designed to run where it is.
07 Sahara Unlimited
rirrgang is offline   Reply With Quote Quick reply to this message
Unread 11-24-2013, 08:53 AM   #4
Web Wheeler
ronjenx's Avatar
2008 JK Wrangler 
Join Date: Jan 2009
Location: Maine
Posts: 4,482
A 180 thermostat will lower the engine temp on the highway as there is plenty of air flowing through the radiator. Under-hood temps are not high on the highway.
The 180 thermostat won't lower the engine temp when going slow unless you also lower the "fan on" and "fan off" settings.

If your goal is strictly lowering the under-hood temps, consider something that will aggressively do that while letting the engine run at its design temperature of 195.
OEM Mechanical Fan Retrofit
ronjenx is online now   Reply With Quote Quick reply to this message
Unread 11-24-2013, 09:44 AM   #5
Web Wheeler
2008 JK Wrangler 
Join Date: Oct 2008
Posts: 6,789
YUP, do like rj says--

Don't try to apply 1960 engine op/performance temps to the new jeeps/cars, it's ridiculous, but thats the way they're designed now/w hi-temp gaskets/fitting/components/plastic-etc-

You might wanna get a scooped/vented hood and don't put too much crap in front of the grill slots-

Most of what you do for temp reduction will be for YOUR personal pleasure and not affect the engine/compt-ops

My '08 JKUR has operated in the NorNv desert, at 90 to 115F for over 5 years and with some required maintenance--she ops fine, no degradation-

Good luck

Yellow Jeep No. 683
JIMBOX is online now   Reply With Quote Quick reply to this message

Quick Reply

Register Now

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

Email Address:


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

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.