WJ 2002 Rear Main Seal Oil Leak - 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 Grand Cherokee & Commander Forums > WJ Grand Cherokee Forum > WJ 2002 Rear Main Seal Oil Leak

Dan's Old as Dirt Birthday Sale!Premium LED Lighting by VISION X, Proudly sold at ROCKRIDGGEARSHADE Pocket Tops in stock and available at ROCKRIDGE

Reply
Unread 01-06-2011, 01:07 PM   #1
Aggieneer2006
Registered User
2002 WJ 
 
Join Date: Jan 2011
Location: Houston, Texas
Posts: 9
WJ 2002 Rear Main Seal Oil Leak

Before I start, I want to mention that the problem is with a 2002 Jeep Grand Cherokee, Limited (WJ) 4.7 V8 Quadra-Drive. I have searched through the forum and have not found anyone addressing this problem. Plenty of older and newer models with the "two-part" seal fix...but not anyone talking about it for the WJ.

Well my oil is leaking about 1 qt every 3,000 miles. I am 80% sure it is my rear main seal. I did a visual inspection of the valve cover but couldn't see anything. Anyway, I am just doing some research on what it will take to change out this seal. I am mechanically inclined and have done almost all the repairs on this Jeep myself.

So far I know it is a one piece seal. I talked to the service men at the dealer and he says you have to drop the transmission. They say anywhere between 6-8 hours.

So any advice, how-to's, experiences? Please tell me if this should be left to the pros or if you think I can do it myself?

Thanks,

Jose

Aggieneer2006 is offline   Reply With Quote
Unread 01-06-2011, 01:16 PM   #2
dukie564
Registered User
1995 XJ Cherokee 
 
Join Date: Jun 2008
Location: Hanover, MD, Maryland
Posts: 2,727
you haven't found anything in this forum section because it's for XJ cherokees.

This forum is specific to WJ owners - you'll be able to find a better answer there:
http://www.jeepforum.com/forum/f310/
__________________
1995 XJ Cherokee Sport
4.5" Homebrew Lift, 4.0L HO I-6, AX-15, NP231, D30(Open)/C8.25(Locked)
33x12.5 Mickey Thompson Baja MTZ Tires, 283,000 mi and runnin' strong
http://www.jeepforum.com/forum/f22/project-danger-cart-xj-1297118/
dukie564 is offline   Reply With Quote
Unread 01-06-2011, 03:32 PM   #3
98_XJ
Registered User
1998 XJ Cherokee 
 
Join Date: Apr 2009
Location: Allen, TX
Posts: 299
From reading in here (XJ) I know if it is a one piece you have to drop the transmission.
__________________

1998 Jeep XJ Limited 4x4
- Rough Country Series II 3" Lift
- 31-10.50-15 Duratracs on Black Rocks
- JCR Offroad Stage 3 Front Bumper

2010 Chevy Equinox
98_XJ is offline   Reply With Quote
Unread 01-06-2011, 04:25 PM   #4
nickblack
Registered User
1999 WJ 
 
Join Date: Dec 2010
Location: bridgewater, nj
Posts: 739
All 1 piece rear main seals require separation of the engine & transmission.
nickblack is offline   Reply With Quote
Unread 01-06-2011, 04:44 PM   #5
WiCkeDuDe
Web Wheeler
 
WiCkeDuDe's Avatar
2002 WJ 
 
Join Date: Dec 2007
Location: Utah
Posts: 3,099
Yup gotta pull the engine or drop the tranny on the 4.7.
WiCkeDuDe is offline   Reply With Quote
Unread 01-06-2011, 06:35 PM   #6
Merc1973
Registered User
2002 WJ 
 
Join Date: Jun 2008
Location: Ellicott city, MD
Posts: 1,715
Just curious, How many miles do you have? Good luck!
__________________
2002 WJ Ltd. 4.7 V8, QuadraDrive
1973 Mercury Cougar Xr7 convertible 351CJ, C6, 9" rear
1970 Kaiser-Jeep M35A2 W/OW 6x6 Multifuel D-Turbo.


ΜΟΛΩΝ ΛΑΒΕ!
Merc1973 is offline   Reply With Quote
Unread 01-07-2011, 08:39 AM   #7
Aggieneer2006
Registered User
2002 WJ 
 
Join Date: Jan 2011
Location: Houston, Texas
Posts: 9
Thanks Guys. Sounds like I should let a pro do it. I have 140,000 miles on it. I thought this was a WJ forum...Not XJ....not sure what you are talking about duckie564...

Has anyone tried doing it yourself?
Aggieneer2006 is offline   Reply With Quote
Unread 01-07-2011, 08:45 AM   #8
WiCkeDuDe
Web Wheeler
 
WiCkeDuDe's Avatar
2002 WJ 
 
Join Date: Dec 2007
Location: Utah
Posts: 3,099
Pulling the tranny on a WJ is not too hard, at least I think.
WiCkeDuDe is offline   Reply With Quote
Unread 01-07-2011, 09:28 AM   #9
dukie564
Registered User
1995 XJ Cherokee 
 
Join Date: Jun 2008
Location: Hanover, MD, Maryland
Posts: 2,727
Quote:
Originally Posted by Aggieneer2006 View Post
I thought this was a WJ forum...Not XJ....not sure what you are talking about duckie564...
The thread got moved by the admins
__________________
1995 XJ Cherokee Sport
4.5" Homebrew Lift, 4.0L HO I-6, AX-15, NP231, D30(Open)/C8.25(Locked)
33x12.5 Mickey Thompson Baja MTZ Tires, 283,000 mi and runnin' strong
http://www.jeepforum.com/forum/f22/project-danger-cart-xj-1297118/
dukie564 is offline   Reply With Quote
Unread 01-07-2011, 09:31 AM   #10
SplitNail
Registered User
1999 WJ 
 
Join Date: Aug 2008
Location: Katy, TX
Posts: 4,015
Aggieneer2006 where are you at in houston? I'm in Katy.
__________________
1999 WJ 4.7L V8, 242 TC, Front Aussie Locker, 4 Inch RC X-Series lift, 17x8 w/ 4.5BS Black Rock Vipers, 285/70/R17 BFG KM2's, All AMSOIL Synthetic Fluids

SplitNail is offline   Reply With Quote
Unread 01-08-2011, 05:43 PM   #11
Aggieneer2006
Registered User
2002 WJ 
 
Join Date: Jan 2011
Location: Houston, Texas
Posts: 9
I'm around Reliant stadium. Changing the oil on my ride tommorow. I will make a better inspection.
Aggieneer2006 is offline   Reply With Quote
Unread 01-11-2011, 10:12 AM   #12
Aggieneer2006
Registered User
2002 WJ 
 
Join Date: Jan 2011
Location: Houston, Texas
Posts: 9
Just an update. I was going to do an oil change as well as inspect the underside of my Jeep to look for the leak. I wiped everything down as everything is wet...I noticed that the oil filter would develop droplets of oil! I researched that and found that it may be some O-rings from the oil filter adapter. I will do that this weekend.
Aggieneer2006 is offline   Reply With Quote
Unread 01-11-2011, 10:35 AM   #13
Twospeed
Registered User
2002 WJ 
 
Join Date: Apr 2010
Location: Evergreen, Colorado
Posts: 155
If it's from that area, check the Oil Pressure Sending unit also. It's right above the oil filter and leaks like mad when it breaks. Ask me how I know.
Twospeed is offline   Reply With Quote
Unread 01-11-2011, 10:40 AM   #14
SplitNail
Registered User
1999 WJ 
 
Join Date: Aug 2008
Location: Katy, TX
Posts: 4,015
Ask me how I know too. I broke mine off in the block..... That was a BLAST!!
__________________
1999 WJ 4.7L V8, 242 TC, Front Aussie Locker, 4 Inch RC X-Series lift, 17x8 w/ 4.5BS Black Rock Vipers, 285/70/R17 BFG KM2's, All AMSOIL Synthetic Fluids

SplitNail is offline   Reply With Quote
Unread 01-11-2011, 10:41 AM   #15
SplitNail
Registered User
1999 WJ 
 
Join Date: Aug 2008
Location: Katy, TX
Posts: 4,015
Quote:
Originally Posted by Aggieneer2006 View Post
I'm around Reliant stadium.
Thats pretty far from me. I actually go to A&M. lol Whoop!
__________________
1999 WJ 4.7L V8, 242 TC, Front Aussie Locker, 4 Inch RC X-Series lift, 17x8 w/ 4.5BS Black Rock Vipers, 285/70/R17 BFG KM2's, All AMSOIL Synthetic Fluids

SplitNail is offline   Reply With Quote
Reply

Tags
2002 , grand cherokee , oil leak , rear main seal , v8
Thread Tools


Suggested Threads





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.