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Unread 08-03-2010, 12:05 PM   #1
jayjjcc
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Join Date: Aug 2010
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99 Grand Cherokee Limited problem

I'm new to these boards and I only bought the Jeep yesterday... I paid only $300 for it and everything works... except I fear (assumed actually for the price I paid) that the engine is either on it's way out or driving it back home finished it. The gauges are jumping around randomly... every single one of them... when the engine runs, it's extremely rough, sounds worse than a diesel engine... When I got home I realized the oil gauge was empty... it wasn't when I left... I only drove maybe 30miles to get back home... I also noticed the dipstick isn't in there anymore for the engine oil... the small yellow cap is in, but no dipstick and alot of smoke is coming out from in there after the engine warms up. It also stalls if you stop at a light, clicks when you try to restart it, but eventually does restart... and it's backfiring like crazy...

Now I'm just gonna go ahead and assume I need a complete swap of the engine... but is there anything I could try first? Fresh new oil, filter & dipstick? I don't have far to go to get to the garage for the swap and I rather not pay +$100 to get it there...

Also, when I brake it jumps around, I'm assuming warped rotors?

Thanks in advance...

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Unread 08-03-2010, 01:02 PM   #2
fireman33
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Sounds like its been beated up pretty bad lol...any pictures ?
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Unread 08-03-2010, 01:07 PM   #3
ThePhenom
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2001 WJ 
 
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how about take it to a local dealer? or known mechanic? maybe puttin in 500-600 dollars of work and having a good jeep for 800-900 is worth it!
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Unread 08-03-2010, 01:08 PM   #4
Mighty Thor
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1999 XJ Cherokee 
 
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If you just need to tow it a short distance, put the transfer case in neutral and pull it home with a tow rope. Saves you money and If you have to buy the tow rope it is money well spent for the future when you will be the one lending a hand.
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Unread 08-03-2010, 01:09 PM   #5
WJeff
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There's no fixing that engine. You can probably drop in a junk yard engine and still come out ahead.

Jumping around could be any number of suspension related issues.

Good Luck. Sounds like you've got your work cut out for you.
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Unread 08-03-2010, 07:23 PM   #6
88yjproject
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I picked up mine for $600 and it had a knocking engine. I spent about $1000 and rebuilt it myself. That is with boring it .030 over with new pistons,cam,oil pump,lifters, gaskets, sending the head out to get checked for cracks and milled .008. And i did a valve job on it. But I aso work at a dealer and have access to some great equipment and know a lot of people to help.
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Unread 08-03-2010, 11:30 PM   #7
jayjjcc
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CIMG0014.mp4 video by jayjjcc - Photobucket

^ Video of the engine running... I added 6L of oil... I'm assuming the gauge reads 5.4L because that's how much oil fits into the crankcase/filter/etc...? Anyways you can see in the video it reads about 4 after adding 6L... it's starts great and runs hard, but runs when it has oil in it



rocker panels are rusted out, other than that there are 2-3 fist sized spots that have been primered... everything works, cept the back wiper (new motor) and blower... also the back door won't open, but I read somewhere that that is a relay issue, and there is a way to override it?
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Unread 08-04-2010, 08:42 AM   #8
jayjjcc
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bump^ anyone watch the video yet?
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Unread 08-04-2010, 09:05 AM   #9
testify
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I watched your video and cannot see the guage you are referring too, and although I'm not familiar with the WJ's, I would be surprised if there was an 'oil level' guage on the dash. Could you be you be confusing it with the 'oil pressure' guage? If you lost oil pressure and did not immediately turn off the motor, that would be a cause for the bearing failure in your motor.

Anywho, that motor is toast. That noise sounds like rod knock for sure. Stop messing around with it and stop wasting money putting oil in it.
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Unread 08-04-2010, 12:08 PM   #10
Mighty Thor
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X2 on the gauge reading, it is oil pressure not volume you are looking at. and a little over 40 would be about normal for a 100,000 mile engine. First have your codes scanned and find out what the errors are for the check engine light and then maybe a compression check. It sounds like either a rod knocking or maybe a broken piston, burned or broken valve or similar issue. You can either rebuild that motor or buy a used motor and replace or part it out for more than you paid. The rear differential should net you $300 or so.
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Unread 08-04-2010, 12:21 PM   #11
Joshcop
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...sounds like the engine ingested the silicate mixture intended to murder it during the cash-for-clunkers program...
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Unread 08-04-2010, 12:46 PM   #12
jayjjcc
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Yea I only paid $300 for it... I was hoping to have a decent running WJ for less than $2000 in repairs... problem is I can't find a scrap yard with a 4.7..
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Unread 08-04-2010, 05:06 PM   #13
99_WJ_Laredo
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Quote:
Originally Posted by jayjjcc View Post
Yea I only paid $300 for it... I was hoping to have a decent running WJ for less than $2000 in repairs... problem is I can't find a scrap yard with a 4.7..
...and you probably wont. I've been looking around for a used 4.7 and its near impossible where i am as far as junk yards go. Hit up Craigslist. I found one there for free
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Unread 08-04-2010, 07:37 PM   #14
jayjjcc
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So what should I do? Buy a rebuild kit? I looked at a few, but I was wondering what kinda kit to get... there are different ones, I'm assuming a Master rebuild kit? Is it cheaper/does a dodge pickup 4.7 rebuild kit work?
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Unread 08-04-2010, 07:45 PM   #15
jayjjcc
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I live in Sherbrooke, QC by the way... craigslist isn't really used around here... are there any other engine's that would fit "easily" in these WJ's? If I can get a used engine for less than a rebuild, I'd rather go for that... but the 4.7L WJ engine is impossible to find it seems...
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