Engine Coolant Drain plug...where? - JeepForum.com
LinkBack Thread Tools
post #1 of 5 Old 03-19-2009, 06:43 PM Thread Starter
Registered User
1997 XJ Cherokee 
Join Date: Oct 2007
Location: Florida
Posts: 218
Engine Coolant Drain plug...where?

Ok, I am trying to do a full system flush for my 97' 4.0 L XJ. Already found the radiator drain plug, now I neeed the engine block drain plug...Where is it? Pictures helpful....

Jeep XJ 97' 4.0 I6 60 mm TB Bore,
My Jeep isn't getting LIFTED....its EVOLVING.
RogueXJ is offline  
Sponsored Links
post #2 of 5 Old 03-19-2009, 06:50 PM
Registered User
5-90's Avatar
1988 XJ Cherokee 
Join Date: Sep 2006
Location: San Jose, CA
Posts: 5,343
Look on the driver's side of the block, behind the exhaust manifold. You should see a square recess - this is the drive recess for the plug. It is 5/6" or 8m/m (same thing either way,) and you can make a tool fairly quickly from a cheap hex key (instead of buying a spendy one off of the tool truck.)

I am informed that the plug is threaded 3/8" NPT, and you can therefore secure a replacement at the local hardware store. One thing I plan to do is to put a valve in on an elbow to replace that silly plug...

"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"
5-90 is offline  
post #3 of 5 Old 05-18-2009, 10:51 AM
Registered User
2000 XJ Cherokee 
Join Date: May 2009
Location: seattle
Posts: 5
Thanks for the information. I was also looking for the engine coolant drain plug location. Now that I found it, while looking for a tool I realized that my 3/8" square drive was too big and your post, quoted below, I think you meant, 5/16" instead of 5/6".

Originally Posted by 5-90 View Post
...It is 5/6" or 8m/m (same thing either way,) ...
Here's is a pic showing the location of the plug. It's a view looking into the xj from left front. I've taken off a under engine splash guard.

xj2k is offline  
post #4 of 5 Old 05-18-2009, 10:56 AM
It's the crank sensor!
tjwalker's Avatar
1999 XJ Cherokee 
Join Date: Nov 2007
Location: Central Minnesota
Posts: 8,858
I personally don't drain the block. As long as coolant is changed somewhat regularly, I don't think it's necessary.

And as for the radiator, I drain it by dropping the lower hose. Easier than getting to the radiator petcock and less chance of snapping it off/leaks.

99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
tjwalker is offline  
post #5 of 5 Old 02-18-2011, 12:56 PM
Registered User
1998 ZJ 
Join Date: Aug 2009
Location: Salem
Posts: 260
I know this is an old post, but would this drain location be a good spot for a temp gauge sensor?
mjonesjr is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com 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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Where is the engine block coolant drain plug??? ki1022 XJ Cherokee Technical Forum 22 12-31-2015 12:38 PM
Engine Block Coolant Drain Plug FlyinJeep XJ Cherokee Technical Forum 11 01-07-2014 07:02 PM
Do the 4.0L engine have a plug to drain coolant? fortcollinsram XJ Cherokee Technical Forum 2 05-20-2005 08:51 PM
'88 Diff Plug/Block Coolant Drain Plug sroodtuo74 XJ Cherokee Technical Forum 2 09-26-2004 04:49 PM
coolant drain plug? walker_a_d XJ Cherokee Technical Forum 2 08-23-2003 08:22 PM

Posting Rules  
You may post new threads
You may 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
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome