NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > OEM Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

OEM Tech Discussion Forum for OEM (Original Equipment) or stock XJs and MJs.

Reply
 
Thread Tools Display Modes
  #1  
Old October 12th, 2011, 11:26
Brandon77's Avatar
Brandon77 Brandon77 is offline
Member# 3846
 
Join Date: Jun 2011
Location: Lake Forest, CA
Posts: 495
Coolant Sensor problem

So i need to get my temp. gauge working in my jeep on the dash before this weekend. I replaced the motor and opened the cooling system but now i have no temperature coming to the dash gauge. Im not worried about the acc. fan because i put it on a manual switch in the cab.
My question is the sensor below the exhaust manifold the temp. sending unit to the gauge or is it the one on the top, back driver side engine by the valve cover the one.
Can someone school me on this.
__________________
'89 2Dr XJ 4x4 Lerado AW4 NP231; 5.5" lift RE Springs & RC X-Flex S/Arms w/ drop brackets, w/ 33" KM2, 4.11 HPD30 Spartan Locker w/ Chromoly Shafts & D44 LSD w/ Chromoly Shafts w/ disk brakes.
...And remember to TREADLightly!
Reply With Quote
  #2  
Old October 12th, 2011, 11:29
boostamante boostamante is offline
NAXJA Forum User
 
Join Date: Jan 2009
Location: los angeles california
Posts: 5,020
Re: Coolant Sensor problem

By the valve cover
Reply With Quote
  #3  
Old October 12th, 2011, 18:40
8Mud's Avatar
8Mud 8Mud is offline
NAXJA Forum User
 
Join Date: Sep 2003
Location: Central Germany
Posts: 8,419
Re: Coolant Sensor problem

The sensor/sending unit on the top of the head, rear. The circuit grounds through the sending unit to the head. Make sure you have the head to firewall ground connected or you'll likely have more issues than just the temperature gauge.
An open circuit, bad or disconnected wire will peg the gauge one direction, grounding the wire straight to the head, should peg the gauge the other direction (with the key in the run position).
Using anything to to seal the threads on the sending unit may mess with the ground/continuity. You can test the sending unit ground by testing resistance between the sending unit housing and the head. Always a good idea to check resistance between the head and the firewall while your there and ohm test between the head and the negative battery terminal.
Reply With Quote
  #4  
Old October 13th, 2011, 12:18
Brandon77's Avatar
Brandon77 Brandon77 is offline
Member# 3846
 
Join Date: Jun 2011
Location: Lake Forest, CA
Posts: 495
Re: Coolant Sensor problem

Awesome thanks you guys
__________________
'89 2Dr XJ 4x4 Lerado AW4 NP231; 5.5" lift RE Springs & RC X-Flex S/Arms w/ drop brackets, w/ 33" KM2, 4.11 HPD30 Spartan Locker w/ Chromoly Shafts & D44 LSD w/ Chromoly Shafts w/ disk brakes.
...And remember to TREADLightly!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coolant temp sensor Jeff1 OEM Tech Discussion 8 February 27th, 2008 21:51
XJ Coolant Temp sensor jfiscus OEM Tech Discussion 6 January 28th, 2008 13:13
Coolant Temp Sensor Blaine B. OEM Tech Discussion 14 April 22nd, 2007 19:32
Coolant Temperature Sensor freewithfire OEM Tech Discussion 6 March 10th, 2005 05:28
Coolant temp sensor CutLaredo OEM Tech Discussion 5 November 21st, 2004 14:21


All times are GMT -7. The time now is 19:43.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014