Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

90 xj Knock Sensor????

Thread Tools
 
Search this Thread
 
Old Apr 6, 2022 | 05:39 PM
  #1  
homestd's Avatar
Thread Starter
Member
 
Joined: Feb 2021
Posts: 192
Likes: 8
From: S.E. KY
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0l
Default 90 xj Knock Sensor????

Hi all, I was working on my driver's side motor mount and some wiring was in the way. When I moved it over (gently) I noticed a plug hanging from the harness. It has a plug like the injectors with a lock clip. I went to my FSM/PDF and I think it goes to the knock sensor. I located the sensor (without contacts) just above the oil pan ridge.





Is this the knock sensor? She's running great without it, but I need to know what to replace. Thanks gang.
Reply
Old Apr 6, 2022 | 08:03 PM
  #2  
Saudade's Avatar
CF Veteran
5 Year Member
Veteran: Air Force
Community Favorite
 
Joined: Aug 2020
Posts: 2,109
Likes: 576
From: SoCal
Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
Default

Yep, that's it.

Assuming you can get the rest of the broken connector out, you can replace the sensor.

https://www.rockauto.com/en/moreinfo...5108&jsn=10913
Reply
Old Apr 6, 2022 | 09:11 PM
  #3  
Salden Hund's Avatar
Member
 
Joined: May 2012
Posts: 235
Likes: 0
From: Th Cloud
Year: 90'
Model: Cherokee
Engine: 4.0
Default

lol, mine looks just like that
Reply
Old Apr 6, 2022 | 10:07 PM
  #4  
homestd's Avatar
Thread Starter
Member
 
Joined: Feb 2021
Posts: 192
Likes: 8
From: S.E. KY
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0l
Default

It runs great without it. I'll replace it, but it's my daily, (actually, my only). Thanks
Reply
Old Apr 6, 2022 | 10:14 PM
  #5  
homestd's Avatar
Thread Starter
Member
 
Joined: Feb 2021
Posts: 192
Likes: 8
From: S.E. KY
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0l
Default

BTW, Will I loose oil when I remove it? It looks pretty high.
Reply
Old Apr 7, 2022 | 07:20 AM
  #6  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,577
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

No.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
twotone92
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
Mar 29, 2022 04:18 PM
EuroJeep
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
17
Jul 11, 2019 07:47 AM
williey00
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
Mar 6, 2011 08:19 PM
hudson12787
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
Nov 10, 2010 07:24 AM
richxj89
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
Jul 5, 2009 08:15 PM

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



All times are GMT -5. The time now is 09:38 AM.