Overheating but not overheating? - Page 2 - JeepForum.com
Search  
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 JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > Overheating but not overheating?

WJ Modular Recovery & Bull Bar Relocation PackagesRough Country Jeep Suspension Deals at Rockridge 4WD!Steinjager TJ tube doors

Reply
Unread 03-31-2013, 10:28 AM   #16
AZ Jeff
Web Wheeler
2000 XJ Cherokee 
 
Join Date: Sep 2005
Location: San Tan Valley Arizona, AZ
Posts: 7,160
Quote:
Originally Posted by Motorcharge View Post
I've since replaced the radiator and aux fan. Backflushed the system prior to installing the new radiator and backflushed the heater core again on it's own. New rad is in, aux fan works. Same situation. Put an IR gun on it today, it's definitely not running hot or anywhere close to what the gauge is reading.
So now you have confirmed you have a guage problem. As others suggested, the cheaper of the two major elements of the temperature guage system is the sender. Get a new one, and preferably from Mopar, as it's most likely to be properly calibrated to work with a known good guage correctly.

__________________
AZ-Jeff
1992 XJ 2" lift -- RIP
2000 XJ 3" lift -- Australian Ford Big Brakes up front, rock rails, ZJ rear discs (with WORKING parking brake), C4x4 rear bumper/tire carrier, Hella H4 headlights, IPF driving lights, OEM skid plates, OME springs/shocks, JKS LCA's, JKS Sway Bar links.
AZ Jeff is offline   Reply With Quote
Unread 03-31-2013, 11:21 AM   #17
Paradise XJ
Registered User
1990 XJ Cherokee 
 
Join Date: Jan 2007
Location: Paradise, CA, Northern California
Posts: 2,018
When you replaced the sender...did you put any thread sealer, teflon tape or RTV on the threads? Since the one wire sender grounds at the head, putting goop on the threads can give you an errant/unreliable reading.

I would personally stay away from installing a sender in the t-stat housing. Just my opinion that it's just a hack job. Fix it right IMHO.
__________________
1990 XJ Laredo - White & Chrome
1988 MJ Pioneer - Metallic Green and Black

Quote:
Originally Posted by Caner. View Post
I slide it in and then when I pull, it works fine.
Paradise XJ is offline   Reply With Quote
Unread 03-31-2013, 12:36 PM   #18
Motorcharge
Registered User
1992 XJ Cherokee 
 
Join Date: Oct 2008
Location: Richmond, Virginia
Posts: 11,482
The one I've replaced is the one in the back of the cylinder head. I didnt put anything on it prior to putting it in.
__________________
|Project Motörcharge | XJ Non-Tech FAQ | Ammo Can Lock Box | Motorcycle Build|

WANTED: YJ Rollbar - PM for details.
Motorcharge is offline   Reply With Quote
Unread 03-31-2013, 09:52 PM   #19
AZ Jeff
Web Wheeler
2000 XJ Cherokee 
 
Join Date: Sep 2005
Location: San Tan Valley Arizona, AZ
Posts: 7,160
Quote:
Originally Posted by Motorcharge View Post
The one I've replaced is the one in the back of the cylinder head. I didnt put anything on it prior to putting it in.
That's correct. It's NPT, so it's self-sealing if the threads are clean.
__________________
AZ-Jeff
1992 XJ 2" lift -- RIP
2000 XJ 3" lift -- Australian Ford Big Brakes up front, rock rails, ZJ rear discs (with WORKING parking brake), C4x4 rear bumper/tire carrier, Hella H4 headlights, IPF driving lights, OEM skid plates, OME springs/shocks, JKS LCA's, JKS Sway Bar links.
AZ Jeff is offline   Reply With Quote




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