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View Full Version : the death of a 1999 HO 4.0

Timmy2XJS
December 14th, 2008, 19:24
so i loaned my jeep to buddy in need. hecalls me and tell me that somthing has gone wrong and its coming from the front (maybe the diff i think, it was just put back together) so i arrive, on a dark side road to fine my jeep with its flashers. i look at the ground and see a dark fluid. my heart sunk bc i knew it was oil. so i look around to see if i can find the source........


http://i2.photobucket.com/albums/y17/ardvarkman/PB070076.jpg
http://i2.photobucket.com/albums/y17/ardvarkman/PB070077.jpg
http://i2.photobucket.com/albums/y17/ardvarkman/PB070080.jpg
http://i2.photobucket.com/albums/y17/ardvarkman/PB070081.jpg

this next one is from on top lookin down in bteween the intake and exhaust. the light is comming up through the hole in the oil pan.
http://i2.photobucket.com/albums/y17/ardvarkman/PB070083.jpg



sucks really bad. :smsoap:

any one got a spare motor laying around........
UNCC_99XJ
December 14th, 2008, 19:31
Damn that ain't no good!

Wonder why it blew? Oil pressure suddenly drop off or something? How many miles were on it?
Timmy2XJS
December 14th, 2008, 19:35
i dont know what it was doin he siad it was running great and then a loud clunk sound and this.

119XXX far as i know.

im hella bummed.

oh and get this, i started it before i looked under neath it, and had oil pressure....i dont get it.
UNCC_99XJ
December 14th, 2008, 19:38
oh and get this, i started it before i looked under neath it, and had oil pressure....i dont get it.

Well that's odd.....wonder how it can have oil pressure with no oil?

Same thing happened to a friend of mine last year...was driving down the highway and his 98 went boom for no reason. Oil pressure and everything were fine. Just a fluke I guess...
Timmy2XJS
December 14th, 2008, 19:40
i checked the dipstick, its reading about a quart low! WTF!!! oh well i still have my 88 and she just wont die.


knock on wood.......
Timmy2XJS
December 14th, 2008, 20:09
and the latest news is theres a 93 ho for sale for 150 bucks with 140k for alf like 20 from my house.

might be back on the road sooner then i thought!
High2by
December 15th, 2008, 05:31
Man that sucks!! Sounds like a plan is forming though...
256offroad
December 15th, 2008, 18:10
i checked the dipstick, its reading about a quart low! WTF!!! oh well i still have my 88 and she just wont die.


knock on wood.......

because the dipstick and the oil pickup tube are on the low side of the pan where all the oil is. so for one instance it will read good oil pressure as long as there is enough to keep it going through the pump. once you idle it up however it will drop

i know this because i punched a hole in the upper portion of my pan on a rock and was able to idle around the rest of the day just barely loosing oil. once gassed it at all it would start to drain... FAST
Timster
December 15th, 2008, 18:16
That sucks, Hope you get it goin soon.
dave92cherokee
December 16th, 2008, 15:08
because the dipstick and the oil pickup tube are on the low side of the pan where all the oil is. so for one instance it will read good oil pressure as long as there is enough to keep it going through the pump. once you idle it up however it will drop



http://i2.photobucket.com/albums/y17/ardvarkman/PB070080.jpg
http://i2.photobucket.com/albums/y17/ardvarkman/PB070081.jpg


How can it show oil even on the low side when there is those two big gaping holes in the pan especially the one on the low side all the oil would drain.

Sucks about you luck though, have you pulled it apart to see how widespread the damage is internally?
t_aldrich
December 16th, 2008, 15:33
actually both holes are higher than the sump.
asp
December 16th, 2008, 15:49
sounds like it's time for a stroker.
flash2pablo
December 16th, 2008, 18:44
Being motor illiterate...What exactly could be the cause of such a failure???
NW-ZJ-SCOTT
December 16th, 2008, 18:49
Being motor illiterate...What exactly could be the cause of such a failure???
da motor went boom. dats watt kawzed it yo!;)
53guy
December 16th, 2008, 19:15
TWO thrown rods? Good lord, this guy must have been beating the ever living piss outta that motor. Did it look like he took it off the street at all...like had a little fun with it before bringing it back? If he was a Marine, I almost would bet my next paycheck he did! Well, quick fix, my XJ is still for sale....... =)
R_jeep
December 16th, 2008, 19:32
4.0 dont like high rpm's. its a manual right ?
Timmy2XJS
December 17th, 2008, 03:14
TWO thrown rods? Good lord, this guy must have been beating the ever living piss outta that motor. Did it look like he took it off the street at all...like had a little fun with it before bringing it back? If he was a Marine, I almost would bet my next paycheck he did! Well, quick fix, my XJ is still for sale....... =)


yes yours is for sale, and it is one hellofa machine but i have a wife and kid and the wife is deploying, so all that means i cant afford it :(



and far as i can tell the jeep was still clean (well as when i handed the keys over) and the spot on the street where to oil starts wasnt like a huge ass explosive puddle. it was rather small. i dont know what happend but he did buy the new motor and he is helping me swap em so its not all bad.
Timmy2XJS
December 17th, 2008, 03:16
4.0 dont like high rpm's. its a manual right ?



yep its a 5 sp. at first i thought he was slamming it through the gears and maybe missed one? but liek i said in my above post, he did pay for the replacement motor and such......
53guy
December 17th, 2008, 03:23
Good, at least he hooked you up with a new motor. Glad to hear that.
desertfox1023
December 17th, 2008, 06:37
and the latest news is theres a 93 ho for sale for 150 bucks with 140k for alf like 20 from my house.

might be back on the road sooner then i thought!

Suck that this happened, but you better jump on that motor quick. I've heard at least 3 people talking about getting that same motor but no one has bought it yet apparently. But if you got your 88 to drive why not go ahead and make a 4.7L stroker as the replacement motor.
53guy
December 17th, 2008, 11:17
Did you guys drop the oil pan before you took those pictures? Just curious because it looks like the pan was missing a bolt.
Timmy2XJS
December 17th, 2008, 11:20
Suck that this happened, but you better jump on that motor quick. I've heard at least 3 people talking about getting that same motor but no one has bought it yet apparently. But if you got your 88 to drive why not go ahead and make a 4.7L stroker as the replacement motor.



well i forked over the cash so its mine for sure (as long as the kid doesnt screw me) and i have considered doin a stroker, but its all about money, and i really cant afford to do it(no matter how badly id like to)

i know im goin to clean up the new motor and replace the seals and swap over my intake and other stuff. should have it back on the road by the end of january. i hope.....
Georgia Mike
December 23rd, 2008, 07:05
Hmmm.....sounds sort of familiar. :cool:

I know a guy with a '97 that said "I don't know what happened. It just lost oil pressure and quit." He doesn't seem like the hot rodding type, but you never really know. I checked it over and sure enough, the engine is locked down solid. It's a real shame, too. It only had 126,000 miles on it. No slung rods, though :rolleyes:
bigalpha
December 23rd, 2008, 22:05
4.0 dont like high rpm's. its a manual right ?

Strange. With the AW4, if you manually put it in 1-2, it will shift into '2' only at something like 600,000k RPM.
Timmy2XJS
December 24th, 2008, 19:18
Strange. With the AW4, if you manually put it in 1-2, it will shift into '2' only at something like 600,000k RPM.


except i have a semi new AX-15 in mine :D but now worris all the same