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Old February 13th, 2010, 12:40 PM   #21
redram98
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Fuel pump
thought that too. pressure is consistant on a gauge though. checked it the other day. i know for sure the plunums gone but have not had time to even look up the complicated-ness of the "procedure"
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Old February 13th, 2010, 01:10 PM   #22
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the intake deal is fairly straight forward, pull off the intake and on the bottom side it will look something like a trans pan is bolted to the bottom (a cover with many little bolts) this is what was leaking on mine and there is a way to check for it without removing but i dont remeber how just now. gl with it tho
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Old February 13th, 2010, 04:44 PM   #23
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borrowed my brothers truck tonight. it is almost dangerously slow. does not want to go over 70 unless down hill. stomp on the gas and it still just wants to creep along. oil pressure, temp all in check. newer trans, no way its just the trans slipping. when you do stomp on the gas sound like a tornado of air leaking from under the hood. am i discribing a plenum gasket leak? if so how hard is the replacement? i know for sure the cat is gutted as well so not the issue. thanks ahead of time for the help. mike
Bottom line is there is no place on that engine where air should be under pressure unless your exhaust is plugged. Saying the cat was gutted could be a big red flag. Unless somebody actually cut the converter housing apart and removed EVERYTHING there might still be some stuff flopping around in there or at some other bend in the tail pipe - especially if you say it hasn't set a catalyst monitor code yet. Ive seen this before on "broom handle" or beat-it-with-a-hammer cat gutting jobs. Just something to think about.
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Old February 13th, 2010, 04:50 PM   #24
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You say you over-oiled the filter? How is the MAF sensor? If there was too much oil it can coat the wires and cause bad readings and cause the engine to run crappy. I don't even know if it has a MAF sensor but I have heard of this. If it has one, I would unplug it and see if that changes anything.
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Old February 13th, 2010, 05:56 PM   #25
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You say you over-oiled the filter? How is the MAF sensor? If there was too much oil it can coat the wires and cause bad readings and cause the engine to run crappy. I don't even know if it has a MAF sensor but I have heard of this. If it has one, I would unplug it and see if that changes anything.
nope no maf sensor. never seen one on a dodge truck. prob. why they get like 5 mpg.

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Old February 13th, 2010, 06:02 PM   #26
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Bottom line is there is no place on that engine where air should be under pressure unless your exhaust is plugged. Saying the cat was gutted could be a big red flag. Unless somebody actually cut the converter housing apart and removed EVERYTHING there might still be some stuff flopping around in there or at some other bend in the tail pipe - especially if you say it hasn't set a catalyst monitor code yet. Ive seen this before on "broom handle" or beat-it-with-a-hammer cat gutting jobs. Just something to think about.
its my brothers truck. him and a buddy (sure everybody knows how that goes) gutted it, pounding the ceramic from the back of the cat. i drive it on occasion cause my wk holds no more than 5 bags of groceries or the equivilant of AF clothing when the girls take it out. i have not heard any rattling, but now that you say this, im sure there could be something stuck downstream of the cat, or they just did a terrible job gutting it and only did it partially. thanks, definatly another thing to consider.
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Old February 17th, 2010, 07:37 AM   #27
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could be a bad gut job, i know when we do one we cut the pipe about an inch behind the converter and use a home extended chisle in the air hammer and it makes it much nicer, but still a pain to get all the little chunks
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Old February 17th, 2010, 12:35 PM   #28
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Plenum gasket write-up
from JU, based on a zj but shouldn't be much difference on ram. I think the new pan gaskets have been re-designed but still have been some cases where they fail again. Better option is the Hughes aluminum plenum pan. They also sell an intake gasket and bolt kit, since the intake bolts are TTY. APS also sells an aluminum pan, IIRC theirs is a few bucks more though.

Having the intake off is a good time to clean up the injector bosses, remove the divider (if it has one) and shorten the runners if you wish.

As far as EGR, at least on the ZJ’s it was a 95 and earlier thing, went away in 96. Not sure if it was the same years on the rams but I would guess so.
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Old February 17th, 2010, 04:31 PM   #29
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I've got the Hughes kit on mine. Love it!!
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Old February 20th, 2010, 09:37 AM   #30
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Originally Posted by Chinski View Post
Plenum gasket write-up from JU, based on a zj but shouldn't be much difference on ram. I think the new pan gaskets have been re-designed but still have been some cases where they fail again. Better option is the Hughes aluminum plenum pan. They also sell an intake gasket and bolt kit, since the intake bolts are TTY. APS also sells an aluminum pan, IIRC theirs is a few bucks more though.

Having the intake off is a good time to clean up the injector bosses, remove the divider (if it has one) and shorten the runners if you wish.

As far as EGR, at least on the ZJs it was a 95 and earlier thing, went away in 96. Not sure if it was the same years on the rams but I would guess so.
thanks alot for the info. i had a 94 zj 5.2 no egr...maybe engine was swapped in? didnt know the history (repo) and i never checked the numbers. this removeal of divider and shorten of runners you speak of has me lost. are you talking about modifying the manifold?
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Old February 23rd, 2010, 09:33 PM   #31
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Yes, modifying the manifold.
This
pretty much explains it.

Somewhere around mid 98 or in 99 Dodge actually quit making the manifold with the divider in it. None of the pics in that link show the divider before he removed it, but once you take the pan off the manifold you'll know if its there or not.

Just something to consider while you are in there. I’d at least clean up the injector bungs, since that is easy enough to do with just a dremel.
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Old February 28th, 2010, 12:14 PM   #32
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Yes, modifying the manifold. This pretty much explains it.

Somewhere around mid 98 or in 99 Dodge actually quit making the manifold with the divider in it. None of the pics in that link show the divider before he removed it, but once you take the pan off the manifold you'll know if its there or not.

Just something to consider while you are in there. Id at least clean up the injector bungs, since that is easy enough to do with just a dremel.
for sure. thanks alot for the info. when i get around to this project i will try to do so.
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