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Old 12-13-2011, 07:18 PM
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Thumbs down Defective oil pans 1999-2003

I own a 2003 jeep grand cherokee limited. Well i was trying to change the crank position sensor i bumped the oil ban with a bar, it sprung a leak. after lookin at the oil pan i noticed oil was seeping out of the entire bottom of the oil pan. the oil pan was less then the thickness of a dime all over. Now,... i own four chevy trucks, and this is not a jeep versus chevy thing, because i love my jeep, but one of my trucks is an 89 chevy 3/4 ton and it has the original oil pan, as do 2 of the other 3 trucks i own. Are these pans defective or recalled? Ive owned this jeep for 2 years and ive already changed the radiator, the power steering pump crank positioning sensor and now the oil pan. Before this jeep i had a 1995 jeep grand cherokee and parts flew off of it, but it also had 200000 + miles on it. anyone else have similar problems with these oil pans?
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Old 12-13-2011, 07:31 PM
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Re: Defective oil pans 1999-2003

I have never heard of them being a problem, The rear main is a super common failure being a stupid 2 pc design and this can lead to oil accumulation on the bottom of the pan. as for hitting it and putting a hole in it, the pan is not designed to take its, it is not a structural component, its simply to retain oil for the oil pickup to draw from. If it makes you feel any better or worse, the new 5.7l grand cherokee (and likely most or all other applications) have a composite oil pan with metal thread inserts for the drain plug.
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Old 12-13-2011, 08:23 PM
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Re: Defective oil pans 1999-2003

I don't think the oil pans were recalled, but I had to replace the one in my 99' a few years ago after it rusted out.
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Old 12-13-2011, 11:09 PM
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Re: Defective oil pans 1999-2003

Yes they most definitely are JUNK at least on the 4.7s anyway.Mine is an 04 and it was already rusting.I sanded it down and coated it with a professional grade epoxy from work. I caught one too late on a 2000 Durango and had to change it. Sad part is my 04 only has 66K on it. I think part of the problem is the 4.7 doesn't leak so no protective sludge.For the people that don't change their own oil it wouldn't hurt to take a look under there.You could be running on borrowed time especially if you live in a snow belt area. Google 4.7 oil pan rust and you'll see how many people are having this problem. If anything deserves a recall this does.
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Old 12-14-2011, 04:31 PM
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Re: Defective oil pans 1999-2003

Hi YESYESYES -

2002 4.7L I was surprized to see the state of the oil pan it is completely rusted and flakly rust at that! What is with this I like you have never seen a oil pan rust out on the car or a truck, salt water boat yep!

So who has done the replacement any better after market pans than Jeep parts! How difficult was it to replace? How did you go about the replacement?

Thanks

Mike -
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Old 12-14-2011, 10:15 PM
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Re: Defective oil pans 1999-2003

i have some serious rust issues on my 4.7 oil pan. i scraped off the rust, sprayed it down with carb cleaner to get it nice and clean. then i slathered on bed liner, put a piece of fiberglass cloth on it, then applied more bed liner. not a drop has leaked since.
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Old 02-03-2012, 11:42 PM
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Re: Defective oil pans 1999-2003

thx for all your comments on these disposable oil pans, at the end of the day they are crap. If yours is bad and need to replace it, the oil pan likely will not seperate from the windage tray/ gasket. when this happens just cut open the bottom of the oil pan, take out the three bolts inside the oil pan and viola! that is after you spend two days figuring out how to loosen the exhaust and everything else, good luck fellas and thanks for the comments!
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Old 02-05-2012, 11:11 AM
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Re: Defective oil pans 1999-2003

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Originally Posted by merwin10 View Post
Hi YESYESYES -

2002 4.7L I was surprized to see the state of the oil pan it is completely rusted and flakly rust at that! What is with this I like you have never seen a oil pan rust out on the car or a truck, salt water boat yep!

So who has done the replacement any better after market pans than Jeep parts! How difficult was it to replace? How did you go about the replacement?

Thanks

Mike -

i cannot speak for the 4.7, as i have a 4.0, but replacing the oil pan should be as simple as unbolting it from the block, removing any gasket that may be left on the block, and re bolting the new one. with the new one, i would suggest taping off the sealing surface and cleaning the new oils off of it, then spray it with truck bed liner, or some other durable paint like substance to protect it even more.
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Old 02-06-2012, 09:31 AM
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Re: Defective oil pans 1999-2003

I wish this was a recall from Chrysler. Unfortunately its not as simple as unbolting the pan on the 4.7 as they designed the exhaust Y pipe to hug the oil pan and get in the way of the bolts.
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Old 02-07-2012, 01:40 AM
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Re: Defective oil pans 1999-2003

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Originally Posted by 01grand View Post
I wish this was a recall from Chrysler. Unfortunately its not as simple as unbolting the pan on the 4.7 as they designed the exhaust Y pipe to hug the oil pan and get in the way of the bolts.
could you get to the bolts if you used a series of extensions and universal joints? or possible ratcheting wrenches?

ive used those ratcheting wrenches to get in some TIGHT places.

again. never really looked at a 4.7 underneath. just trying to help
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Old 02-07-2012, 10:25 PM
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Re: Defective oil pans 1999-2003

Could be possible, I will have to try that if I need to replace it. I plan on patching it up this weekend, if that doesn't hold replacement will be next.
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