Rear Main Seal Question
Thread Starter
Seasoned Member
Joined: Mar 2010
Posts: 425
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From: APO (US Military)
Year: 1998
Model: Cherokee
Engine: 4.0
When I first got the Jeep it would drip every once in awhile. Went to an offroad park Friday and now its leaking all over the place, only while driving. Then when I let it sit just the oil that leaked will drip and thats it. On the way home yesterday I noticed a slight howling/grinding noise coming from where it leaks. The oil is topped off too. Could the seal be causing the noise? Or do I have other issues. While I was at the park I did go the a major water hole. Had water up to the door speakers, but ran fine. Going to start tearing the oil pan off tonight. What else do I need to look for. And there is no water in the oil.
Thread Starter
Seasoned Member
Joined: Mar 2010
Posts: 425
Likes: 0
From: APO (US Military)
Year: 1998
Model: Cherokee
Engine: 4.0
Got home and got the oil pan off. There is a one-piece gasket on it (factory?) By looking at the oil pan gasket there are tears all along the rear part of the gasket. Can this be causing my oil leaks??? If so, I won't bother with the rear main seal seeing as I have to have this back on the road on Wednesday and no one has the rear main seal. Or should I go ahead and replace the rear main seal anyways? Oh, and the oil pan gasket has tears on the two rear 1/2" bolt holes and along the rear curve (see-thru tears).
Senior Member
Joined: Jun 2009
Posts: 842
Likes: 2
From: Guilderland NY
Year: 2001
Model: Cherokee
Engine: 4.0L I6 w/ K&N and bored TB
You may as well replace your rear main while the oil pan is already off, they are cheap and having the oil pan off is 3/4's of the job in the first place.
CF Veteran

Joined: Sep 2009
Posts: 3,612
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From: West Valley
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
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Seasoned Member
Joined: May 2010
Posts: 309
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From: Wherever the AF sends me!!
Year: 1997
Model: Cherokee
Engine: 4.0
Well going to have to say if you are already that far then might as well get it done so you know it isn't or won't be an issue for a bit... but if you can get it right away, and you can afford to replace the pan seal twice... then throw a new on now clean everything first and then get it all back together, see if over the next couple weeks it takes care of the issues you were having with the leaks... and then get the rear main on order in the mean time... all else fails if it does fix it, you will have the new rear main seal waiting as you will need it one day I am sure...
CF Veteran
Joined: Jun 2009
Posts: 5,383
Likes: 5
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
CF Veteran
Joined: Jun 2009
Posts: 5,383
Likes: 5
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
CF Veteran
Joined: Jun 2009
Posts: 5,383
Likes: 5
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
One good thig regarding the rear main seal would be to purchase one of those double lip ones, that would be worth money and tme.
Thread Starter
Seasoned Member
Joined: Mar 2010
Posts: 425
Likes: 0
From: APO (US Military)
Year: 1998
Model: Cherokee
Engine: 4.0
They can't get the oil pan gasket til tomorrow, lol but they have the rear main in stock. So looks like I will be doing it tomorrow.


