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Robert R
Robert R, ASE Certified Master
Category: Jeep
Satisfied Customers: 3932
Experience:  ASE Master Certified, Chrysler Certified
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2008 jeep grand cherokee 3.0 diesel looks like rear main

Customer Question

2008 jeep grand cherokee 3.0 diesel looks like rear main leak replaced rear main but leak is still there
JA: Thanks. Can you give me any more details about your issue?
Customer: oil dripping when vehicle started coming from between motor and transmission
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Submitted: 9 months ago.
Category: Jeep
Expert:  roybelding replied 9 months ago.

good evening my name is ***** ***** I will assist

if the rear main is still leaking it could be from 2 other issues. the old seal can wear a mark on the surface of the crank and the seal will not seal. using a seal repair kit works well for that. the other reason is a worn rear main bearing. the rear of the crank wobbles from the worn bearing and the seal leaks.

Roy

Customer: replied 9 months ago.
Is it a common issue with these units
Customer: replied 9 months ago.
What is more common for a oil leak in the back of these units
Customer: replied 9 months ago.
What is the most common cause of oil leak in this vehicle from the back
Expert:  Robert R replied 9 months ago.

Hello, welcome and thanks for asking your question. My name is*****'m a Certified Auto Technician with 28+ years experience. I will do my best to assist you. please keep in mind that I may need to ask questions of you before I can answer. When you reply please feel free to add as much detailed information as possible pertaining to your concern.

On a 2008 Grand Cherokee with a 3.0l diesel it is more common for a leak from the engine oil cooler to be leaking from the bell housing area. The oil cooler is mounted in the valley between the cylinder heads. There are weep holes in the block that direct any leakage from the oil cooler to drain out in the bell housing...

I can post some pics for you if you like showing the oil cooler and oil drainage path if you like. Let me know.

To fix this you must replace the engine oil cooler and o ring seals. This requires to remove the intake manifolds for access to the oil cooler. If you need a procedure, let me know....

Keep me posted and let me know if you have any additional questions...

Thank you,

Robert

Customer: replied 9 months ago.
Could you send the pics and procedure to replace the oil cooler and seals .thanks
Expert:  Robert R replied 9 months ago.

Here are some pics for now...

Click here

Click here

Click here

Give me a bit to round up a procedure...

Thank you,

Robert

Expert:  Robert R replied 9 months ago.

Here is the removal and installation procedures, let me know if you need any of the details in the document links.

Removal

Installation

Keep me posted and let me know if you have any additional questions...

Thank you,

Robert

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Expert:  Robert R replied 9 months ago.

Let me know if you need additional info on this concern, I'll be here for additional questions if needed..

Thank you,

Robert