Thermostat Location for 89 Comanche -
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 Cherokee & Comanche Forums > MJ Comanche Technical Forum > Thermostat Location for 89 Comanche

Win this 2015 Jeep !!PIAA LED Light Kit - FREE Mechanic LED Headlight - Morris K&N Air Intakes and Filters - Money Back from K&N!

Unread 03-23-2008, 02:47 PM   #1
Registered User
Join Date: Mar 2008
Location: canada
Posts: 1
Thermostat Location for 89 Comanche

I have an 89 jeep comanche and can not locate where the thermostat is. I am a beginner at this so please help.

Its a 4 cylinder engine automatic.

if there is any other info needed i will apply when asked thanks in advance

Happy Easter as well

omerta1169 is offline   Reply With Quote Quick reply to this message
Unread 03-23-2008, 08:21 PM   #2
Registered User
1993 ZJ 
Join Date: Jul 2007
Location: washington
Posts: 97
follow the upper radiator hose and you will see it going to a housing, unbolt the 2 bolts and its under there, when you picking up a thermostat get a haynes manual, they show how to do the basic maintenance
93' ZJ 4.0l 4x4 auto, trail rig, 6 kc's, green and gray, 3.73 swap, 32x11.50 bfg mudd terrain
89' comanche, 2.5L 80k original miles, single stage paint- sold
89blkcomanche is offline   Reply With Quote Quick reply to this message
Unread 03-24-2008, 11:14 PM   #3
Registered User
1987 MJ Comanche 
Join Date: Nov 2005
Location: NW Arkansas
Posts: 21
Yes you can follow the large top radiator hose out of the radiator, the housing should be located on the engine heads right at the front above your belt.
'01 XJ Sport, 4.0 with NV3550, 4x4, Up Country. Added: electric fan conversion, overhead console, and TUPY head (@%&$^#!).
'87 MJ shortbed, no rust! - Restoring using best parts from '87, '89, '96, '01 MJ's/XJ's. Black with chrome, Up Country, D44, NV3550, fog lights, roll bar.
SB6114 is offline   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

Suggested Threads

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.