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XJ Ask the Question Thread
Registered Users
Joined: Feb 2011
Posts: 764
Likes: 0
From: Baltimore, Maryland
Year: 1989
Model: Cherokee
Engine: Inline 6
hey...what does it mean when you suspected a blown head gasket, then open just the valve cover and find that 2 of your valve sets for cylinders 1 ans 3 have done this:
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0
from personal experience - check the inside of the valve cover for sludge build up...if its black, take a flathead screwdriver and scrape the inside...you should see shiny metal underneath. if that happens, take the time to scrape all that sludge out of there...its tedious and time consuming, but it's worth it because theres no longer the chance of that sludge getting into the rest of your engine.
also, make sure all your valve rocker bolts are tight to spec, and that your rockers and pushrods are free of sludge. if you do have to clean them, take the bolts off 2 at a time, per each rocker, and make sure to tighten them all down, rotate the crankshaft a bit, then retighten. trust me, its not pleasant to hear a huge " THUD CRACK THUD CRACK THUD CRACK " when you start up your engine after doing that...
also, if you do have a lot of sludge cleaning to do, MAKE SURE no sludge bits fall in the holes of the pushrods, and you should change your oil after a few miles cuz all that sludge will be free and circulating.
also, make sure all your valve rocker bolts are tight to spec, and that your rockers and pushrods are free of sludge. if you do have to clean them, take the bolts off 2 at a time, per each rocker, and make sure to tighten them all down, rotate the crankshaft a bit, then retighten. trust me, its not pleasant to hear a huge " THUD CRACK THUD CRACK THUD CRACK " when you start up your engine after doing that...
also, if you do have a lot of sludge cleaning to do, MAKE SURE no sludge bits fall in the holes of the pushrods, and you should change your oil after a few miles cuz all that sludge will be free and circulating.
Thx again!
Got it removed.
Here is a video....no sludge but loud tapping noise in a few.
Oh, i started a thread...pls chime in.
https://www.cherokeeforum.com/f2/pus...tached-110519/
Thx.
Last edited by BotakBeng; Oct 31, 2011 at 06:00 PM.
Newbie
Joined: Oct 2011
Posts: 6
Likes: 0
Model: Cherokee
I have a shop. Another shop that I work with knows I am on a lot of messages boards and asked if I could find them a camshaft. They called the dealer ship. I called summit/rockauto/worldpac and some local places that I buy parts from.
I am not sure what went wrong with the truck, I did not ask. What I do know is they had head cleaned up. After they had the head cleaned up the machinist realized the cam was bad.
Anyways, anybody know where I can get a camshaft?
I am not sure what went wrong with the truck, I did not ask. What I do know is they had head cleaned up. After they had the head cleaned up the machinist realized the cam was bad.
Anyways, anybody know where I can get a camshaft?
CF Veteran
Joined: Nov 2010
Posts: 15,581
Likes: 8
From: some small town oregon
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by LoveMy89Anya
hey...what does it mean when you suspected a blown head gasket, then open just the valve cover and find that 2 of your valve sets for cylinders 1 ans 3 have done this:
CF ADMIN
Joined: Sep 2010
Posts: 34,088
Likes: 257
From: Lantana, Fl
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Originally Posted by hwyix
I have a shop. Another shop that I work with knows I am on a lot of messages boards and asked if I could find them a camshaft. They called the dealer ship. I called summit/rockauto/worldpac and some local places that I buy parts from.
I am not sure what went wrong with the truck, I did not ask. What I do know is they had head cleaned up. After they had the head cleaned up the machinist realized the cam was bad.
Anyways, anybody know where I can get a camshaft?
Newbie
Joined: Oct 2011
Posts: 1
Likes: 0
Model: Cherokee
need help
just purchesed a 98 Jeep and keep getting engine light codes P0700=Transaxle control system fault, and P0740=Torque converter clutch no RPM drop at lock-up condition. The Trans shifts just fine heck of a jump off the line what should i try looking at?
Newbie
Joined: Oct 2011
Posts: 6
Likes: 0
Model: Cherokee
CF Veteran
Joined: Jan 2011
Posts: 8,998
Likes: 3
From: Eh infusion
Year: 2000
Model: Cherokee
Engine: The legendary inline 6, haven't done anything here yet
Anyone with a 99+ running a 2001 - 2003 dodge Durango alternator? I did some reading and found a couple sources that say the 2001-2003 Durango with the 5.9 engine has a 160 amp alternator and that it is plug and play with the 99 + model xjs just wondering if any of u have done this and if it's true. I was gonna go with The zj alternator bit it'll take a bit of tweeking cause my field connectors are different I have one kicking around just wanted to bounce around some ideas 
☠ CF Sheriff ☠
Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
Anyone with a 99+ running a 2001 - 2003 dodge Durango alternator? I did some reading and found a couple sources that say the 2001-2003 Durango with the 5.9 engine has a 160 amp alternator and that it is plug and play with the 99 + model xjs just wondering if any of u have done this and if it's true. I was gonna go with The zj alternator bit it'll take a bit of tweeking cause my field connectors are different I have one kicking around just wanted to bounce around some ideas
☠ CF Sheriff ☠
Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
Your model being a Renix engine waaaay futher complicates things also...to do this on yours and see any benefit whatsoever you'd need:
1) H.O. head
2) 99+intake manifold and exhaust manifold
3) H.O. Throttle body
4) H.O. fuel rail and fuel lines
5) bigger injectors
6) 96+ ZJ power steering pump and bracket
7) 96+ throttle cable
8) new belt
9) KEEP renix A/C compressor
10) KEEP alternator
11) H.O. throttle cable bracket (mounts on intake)
12) H.O. intake hose and box
See here: https://www.cherokeeforum.com/f51/re...ts-easy-47578/
CF Veteran
Joined: Jan 2011
Posts: 8,998
Likes: 3
From: Eh infusion
Year: 2000
Model: Cherokee
Engine: The legendary inline 6, haven't done anything here yet
Originally Posted by dukie564
Not plug and play. Mounts will need to be grinded down to make it fit, but it can be done. You'll also have to upgrade your wiring and fusible links.
Tried!! Looks like I'll have to start a new thread!!!
Last edited by CherokeeChick; Nov 3, 2011 at 08:24 AM.
CF Veteran
Joined: Apr 2011
Posts: 1,146
Likes: 0
From: Clayton, NC
Year: 1988
Model: Cherokee
Engine: 4.6L I6 Stroker with port matched +99 intake and 62mm TB
I need a new engine as mine has compression issues and doesn't have the power like it should. It runs great but when I'm traveling at 50+ mph, and start to go up a hill, my Jeep slows way down and I have to goose it to get it to shift into a lower gear to regain speed.
My question is, I'm thinking about looking for a newer engine from like a 96 or 98, something from there with less mileage and I was wondering, what all will I have to do to make the swap? I know you need to change the computers, but else is there to it? Of course I need all my gauges to work and everything else. I have an '88 Renix 4.0. Would it just be better to find another Renix 4.0 and swap that in instead of going through all the pain of swapping in a Chrysler 4.0?
My question is, I'm thinking about looking for a newer engine from like a 96 or 98, something from there with less mileage and I was wondering, what all will I have to do to make the swap? I know you need to change the computers, but else is there to it? Of course I need all my gauges to work and everything else. I have an '88 Renix 4.0. Would it just be better to find another Renix 4.0 and swap that in instead of going through all the pain of swapping in a Chrysler 4.0?