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Unread 11-23-2007, 08:31 AM   #1
CapnJack
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Possible purchase of 2000 Cherokee

Edit 11/25/07

I am looking at a 2000 Cherokee with 70,000 miles on it.

Records indicate that it was well-maintained (oil changed every 5,000 miles and transmission service at correct intervals) but it still has a very slightly leaking valve cover gasket, a slightly leaking rear main seal and a "weeping" rear differential.

Are these normal for a well-maintained Cherokee with 70,000 miles or do they indicate other problems? The interior and exterior are in exceptional shape and it doesn't look abused but looks well-maintained.

I know that the valve cover gasket is an easy fix and the dealer is fixing the seal on the differential but I don't know what a slight leak from the rear main seal could mean in the future? Thanks.

Jack


Last edited by CapnJack; 11-25-2007 at 08:20 AM..
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Unread 11-23-2007, 10:34 AM   #2
XJK
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when looking at a jeep i consider the maintenance to be #1 on my priority list. the XJ drivetrain (properly maintained) can last 300k+, so if you buy, just buy one that you know has been maintained. It will treat you better down the road. On the XJ's the other stuff can be fixed relatively inexpensively so i wouldn't worry about that as much as the maintenance.

-Kyle
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Unread 11-25-2007, 05:37 PM   #3
CapnJack
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But what causes a rear main seal to leak

I have searched for rear main seal leak and read all the posts and replies. I only saw one person mention a possible reason for the seals leaking (crank shaft wobble or something).

I don't mind buying a Jeep with 72000 with a little leak as long as it isn't something big causing it.

Has anyone ever determined what causes the rear main seals to leak other than a lousy design?

Jack
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Unread 11-25-2007, 06:32 PM   #4
XJK
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as far as i know its lousy design and age, there are many rear main seal leaks its just something we have to deal with, you can DIY its a bit of a PITA but it can be done.

-Kyle
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Unread 11-25-2007, 08:09 PM   #5
19OlllllllO41
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Quote:
Originally Posted by NotBotYet
Edit 11/25/07

I am looking at a 2000 Cherokee with 70,000 miles on it.

Records indicate that it was well-maintained (oil changed every 5,000 miles and transmission service at correct intervals) but it still has a very slightly leaking valve cover gasket, a slightly leaking rear main seal and a "weeping" rear differential.

Are these normal for a well-maintained Cherokee with 70,000 miles or do they indicate other problems? The interior and exterior are in exceptional shape and it doesn't look abused but looks well-maintained.

I know that the valve cover gasket is an easy fix and the dealer is fixing the seal on the differential but I don't know what a slight leak from the rear main seal could mean in the future? Thanks.

Jack
The rear main on XJ's are known to leak. Its a common thing that seems to happen to the majority of them. My XJ with 105K will drip a drop or so every now and then from the rear main. If you know the oil was changed regularly and other fluids maintained, I say go for it, 70,000 mi on a 4.0L is just breaking it in! Jeeps are like old school Harleys, they are known to mark their territory a bit!
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Unread 11-25-2007, 08:36 PM   #6
CapnJack
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Thanks guys,

I'm going to buy it but I just want to make sure before I did that it didn't necessarily mean a bad crank or worse. There was so much talk on the forum about replacing the seal and almost none about the reasons. So I guessed it was a bad design.

I'm probably picking it up on Monday or Tuesday so I'll post pics when I do.

Thanks again.

Jack
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Unread 11-25-2007, 09:09 PM   #7
XJK
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congrats, you defiantly wont be sorry with your decision

-Kyle
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Unread 12-09-2007, 09:07 PM   #8
srmitchell
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Quote:
Originally Posted by Kyle Deidrick
when looking at a jeep i consider the maintenance to be #1 on my priority list. the XJ drivetrain (properly maintained) can last 300k+, so if you buy, just buy one that you know has been maintained. It will treat you better down the road. On the XJ's the other stuff can be fixed relatively inexpensively so i wouldn't worry about that as much as the maintenance.

-Kyle
I actually know someone who owns a 90's cherokee.

It has 307k.


hahaha
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Unread 12-10-2007, 05:36 AM   #9
CapnJack
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That's great! After I pick up mine with 70,000 I have 230,000 miles to go to beat that record. There are several threads here about high miles but you have to search to find them. Maybe a sticky or section with photos and verified mileage?
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Unread 12-10-2007, 05:43 PM   #10
CapnJack
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Need to change my forum name from NotBotYet

Picked up my 2000 Cherokee Classic this afternoon. Unfortunately I won't be able to do any work on it until the weekend.

Now I need to change my forum name but I don't know how to do that?
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Unread 12-10-2007, 07:04 PM   #11
XJK
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Quote:
Originally Posted by NotBotYet
Picked up my 2000 Cherokee Classic this afternoon. Unfortunately I won't be able to do any work on it until the weekend.

Now I need to change my forum name but I don't know how to do that?
buy a membership for JF and you can do that

-Kyle
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Unread 12-10-2007, 07:45 PM   #12
CapnJack
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Done

And I would have upgraded anyway because of the help you guys have been before I even bought a Jeep.
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Unread 12-10-2007, 08:24 PM   #13
XJK
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Quote:
Originally Posted by NotBotYet
Done

And I would have upgraded anyway because of the help you guys have been before I even bought a Jeep.
well congrats

now you can go into your account settings and change your name as you like.

-Kyle
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Unread 12-11-2007, 02:07 AM   #14
CapnJack
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That was easy

Jack
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Unread 12-11-2007, 02:50 AM   #15
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"weeping" rear differential?? Humm I hope that it's just around the diff cover or plug. If your rear is a d35 and it's leaking around where the axe tubes go into the pumpkin it's not good news. So do check that out. Leaky valve covers and main seals are nomral. Just don't use syenthic oil untill you get them fixed. Syenthic oil can make leaks worse. Post any other questions in the cherokee tech forum. Thouse dudes have helped me a ton on my 99xj. Enjoy the jeep dude!

R
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