2001 4.0 cracked head - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 09-28-2010, 07:49 PM
Thread Starter
Join Date: Sep 2010
Location: Philadelphia area
Posts: 19
cwmetzger is on a distinguished road
2001 4.0 cracked head

I just purchased my first Jeep its a 2001 4.0 Ive done research and it seems that the years 99-01 have a problem where the heads crack between the second and third cylinder. im not sure of those years but i think thats right. ive read alot about how to see if you have a cracked head and what the signs are. some of them are, loss of coolant or a rise in oil. also when changing the oil which i just did, if it is a milky brown color instead of the usual old black color, that is also a sign that a cracked head is possible. does anyone have advice. im going to be checking on the oil and coolant levels and textures for the next couple of weeks to check. thanks
cwmetzger is offline   Quote
Old 09-28-2010, 07:56 PM   #2
pokey's Avatar
Join Date: Feb 2010
Location: backroads of the Mojave
Posts: 1,107
pokey is on a distinguished road
It's true, they did have a problem with some bad head castings, but in my opinion it was overblown. I think the years affected were '00 and '01. '99 model years weren't affected. (as I recall, mfg dates of 10/99 thru ?) which would exclude '99 model year. Do a search here for more info.
. . . . picking the lines with my twenty-nines . . . .

'99 sport 4.0 5 speed, top-of-the-line floormats
pokey is offline   Quote

Thread Tools

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Blown head gasket or cracked head Indy TJ Tech Forum 11 10-16-2010 11:40 AM
0630 head swap for 0331 Whtshdw TJ General Discussion Forum 2 02-10-2010 10:38 AM
2.5 Cracked head help (pic inside) ziljin TJ Tech Forum 8 09-15-2009 09:25 AM
cracked head jeepjason YJ Tech Forum 0 01-19-2008 11:29 PM
Cracked Windshield (2001 TJ, DIY or Shop?) PaulW TJ General Discussion Forum 2 08-30-2005 10:17 PM

All times are GMT -5. The time now is 05:34 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner