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Old 02-12-2015, 01:16 PM
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Son wants to buy a 1999 WJ laredo

My son wants to buy a 1999 GC laredo 4.0 with 300000 miles for $1600. Any opinions or suggestions as to what to look out for?

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Old 02-12-2015, 06:29 PM
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Re: Son wants to buy a 1999 WJ laredo

Eventhough the 4.0 seems to be bullet proof, this one has quite some miles on it. Still the original engine in it? Because of the miles, you can expect all kind of bearings to be bad, like wheel bearings, differential bearings etc. Can be that they where changed already before. Did you already hear it run and already drove it?
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Old 02-12-2015, 06:37 PM
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Quote:
Originally Posted by Frango100 View Post
Eventhough the 4.0 seems to be bullet proof, this one has quite some miles on it. Still the original engine in it? Because of the miles, you can expect all kind of bearings to be bad, like wheel bearings, differential bearings etc. Can be that they where changed already before. Did you already hear it run and already drove it?
My son just texted me about it today while I was at work. He is 21 and lives on his own so I have not seen it. I have warned him about the high mileage and I don't know much at all about the 4.0 other than everyone says they are bullet proof. The two I have owned were both V8's (06 4.7 and 13 hemi).
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Old 02-13-2015, 12:56 PM
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Re: Son wants to buy a 1999 WJ laredo

The 4.0 will definitely have noisey lifters with that mileage. Nothing to get to excited about it as long as you know ahead of time that they are going to rattle. As mentioned above, all of the bearings will be suspect. Depending on how the car was used, the door hinges may be sagging. I've found that the seat belt buckles get harder to unlatch when they get a lot of miles on them.
Mike Sal
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Old 02-13-2015, 02:49 PM
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Re: Son wants to buy a 1999 WJ laredo

Quote:
Originally Posted by Mike Sal View Post
The 4.0 will definitely have noisey lifters with that mileage. Nothing to get to excited about it as long as you know ahead of time that they are going to rattle. As mentioned above, all of the bearings will be suspect. Depending on how the car was used, the door hinges may be sagging. I've found that the seat belt buckles get harder to unlatch when they get a lot of miles on them.
Mike Sal
It will also likely have a leaking rear main seal if not already replaced.
Before checking, clean engine thoroughly, especially the back of the block.
Then after miles, if you see oil underneath, run hand/rag along back of block to check for new oil leak. If you see it, the valve cover gasket or the cover needs to be replaced before you can tell whether rear seal is leaking.
A tight 4.0 does not leak, although there is folklore that they all do.

Another feature is that the 4.0 needs high revs every now and then to rotate the valves properly. Seems it won't do it until it is at an rpm that will break all speed limits in normal gears.

A good Seafoam treatment would not be a bad idea.

The crank position sensor may be getting old...

Check for even the slightest sign of front vibration at speed--it can turn into death wobble. Replacing the steering stabilizer might quiet it, but the real cause is always worn front suspension parts.

300K of reasonable miles and treatment isn't a red flag, but it is somewhat on the high side. Replacement engines are all over the place, where even strokers aren't that expensive.

The 4.0 can eat catalysts... particularly aftermarket one size fits all.
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Old 02-21-2015, 11:59 PM
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Re: Son wants to buy a 1999 WJ laredo

Check it out really, really good, things may be worn or close to worn out
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