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

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineFS: Jeep Fog Light LED Bulbs! Several Brightness Options! Clayton Off Road JK Short Arm Suspension Kits

Unread 11-23-2013, 06:54 AM   #1
Registered User
Join Date: Aug 2012
Posts: 387
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
Unread 11-23-2013, 07:54 AM   #2
Registered Voter w/ID
HappyTrails's Avatar
2008 JK Wrangler 
Join Date: Nov 2008
Location: West Georgia
Posts: 1,867
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 lift, Fox 2.0 shocks, 37" Nittos, 5.38's, River Raider skids, Warn VR8000-S.
RIPP Gen 2 Stg 2 Supercharger.
Re-inventing the circle and straight line.
HappyTrails is online now   Reply With Quote
Unread 11-23-2013, 09:14 AM   #3
Registered User
2007 JK Wrangler 
Join Date: Aug 2007
Location: San Jose, CA
Posts: 2,148
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
Unread 11-24-2013, 07:53 AM   #4
Web Wheeler
ronjenx's Avatar
2008 JK Wrangler 
Join Date: Jan 2009
Location: Maine
Posts: 3,869
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 offline   Reply With Quote
Unread 11-24-2013, 08:44 AM   #5
Web Wheeler
2008 JK Wrangler 
Join Date: Oct 2008
Posts: 4,834
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 115°F for over 5 years and with some required maintenance--she ops fine, no degradation-

Good luck

Yellow Jeep No. 683
JIMBOX is offline   Reply With Quote

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.