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XJ Ask the Question Thread
CF Veteran
Joined: Aug 2012
Posts: 1,281
Likes: 2
From: Bentonville, AR
Year: 1990
Model: Cherokee
Engine: I6 4.0
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
It can be removed pretty easily. Gotta knock the roll pin out at the body side and then unbolt it from outside the door, and remove the limiter from inside the door.
CF Veteran
Joined: Jan 2012
Posts: 3,170
Likes: 312
From: Australia
Year: 1997 (RHD)
Model: Cherokee (XJ)
Engine: 4.0 ltr
CF Veteran
Joined: Aug 2012
Posts: 1,281
Likes: 2
From: Bentonville, AR
Year: 1990
Model: Cherokee
Engine: I6 4.0

CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
You need to swap the XJ seat brackets to the WJ/ZJ seats then they bolt in.
Junior Member
Joined: Mar 2012
Posts: 95
Likes: 6
From: Pasadena, Ca.
Year: 1990
Model: Cherokee
Engine: 2.5L 4-cyl.
I need a new muffler because the Jeep sounds like everything past the manifold fell off. (Okay, I needed a new muffler a year ago when the Jeep only sounded like a motorboat.) I figured I'd do it myself but when I recently had my car aligned the mechanic said my muffler needed to be WELDED in place. That didn't sound right to me so I went under the Jeep and saw two U-bolts at either end of the muffler which looked simple enough to remove but then I saw weld marks further down the exhaust pipe.
Am I going to have to deal with any welding or just undo the U-blots, slip off the old muffler and replace?
Also, anything wrong with going with a low-cost muffler? Don't care about the exhaust note, just want to stop turning heads a 1/4 mile away...
If no welding is required and I can do it myself, any tricks to making the job easier?
Thanks in advance.
CJ
Am I going to have to deal with any welding or just undo the U-blots, slip off the old muffler and replace?
Also, anything wrong with going with a low-cost muffler? Don't care about the exhaust note, just want to stop turning heads a 1/4 mile away...
If no welding is required and I can do it myself, any tricks to making the job easier?
Thanks in advance.
CJ
CF Veteran
Joined: Feb 2013
Posts: 1,802
Likes: 2
From: Justin, TEXAS
Year: 1988
Model: Cherokee
Engine: 4.0
I need a new muffler because the Jeep sounds like everything past the manifold fell off. (Okay, I needed a new muffler a year ago when the Jeep only sounded like a motorboat.) I figured I'd do it myself but when I recently had my car aligned the mechanic said my muffler needed to be WELDED in place. That didn't sound right to me so I went under the Jeep and saw two U-bolts at either end of the muffler which looked simple enough to remove but then I saw weld marks further down the exhaust pipe.
Am I going to have to deal with any welding or just undo the U-blots, slip off the old muffler and replace?
Also, anything wrong with going with a low-cost muffler? Don't care about the exhaust note, just want to stop turning heads a 1/4 mile away...
If no welding is required and I can do it myself, any tricks to making the job easier?
Thanks in advance.
CJ
Am I going to have to deal with any welding or just undo the U-blots, slip off the old muffler and replace?
Also, anything wrong with going with a low-cost muffler? Don't care about the exhaust note, just want to stop turning heads a 1/4 mile away...
If no welding is required and I can do it myself, any tricks to making the job easier?
Thanks in advance.
CJ
For example, when I had little mechanical experience, I took off all the exhaust from the cat back. It took a come along strapped to the rear bumper along with hooked to the old muffler to get it off, it was clamped previously. In all that, it bend my downpipe about 3" back the way I was pulling
CF Veteran
Joined: Apr 2014
Posts: 1,028
Likes: 0
From: Hagerstown MD
Year: 93
Model: Cherokee
Engine: 4.0 I6 w/Flux Capacitor
I need a new muffler because the Jeep sounds like everything past the manifold fell off. (Okay, I needed a new muffler a year ago when the Jeep only sounded like a motorboat.) I figured I'd do it myself but when I recently had my car aligned the mechanic said my muffler needed to be WELDED in place. That didn't sound right to me so I went under the Jeep and saw two U-bolts at either end of the muffler which looked simple enough to remove but then I saw weld marks further down the exhaust pipe.
Am I going to have to deal with any welding or just undo the U-blots, slip off the old muffler and replace?
Also, anything wrong with going with a low-cost muffler? Don't care about the exhaust note, just want to stop turning heads a 1/4 mile away...
If no welding is required and I can do it myself, any tricks to making the job easier?
Thanks in advance.
CJ
Am I going to have to deal with any welding or just undo the U-blots, slip off the old muffler and replace?
Also, anything wrong with going with a low-cost muffler? Don't care about the exhaust note, just want to stop turning heads a 1/4 mile away...
If no welding is required and I can do it myself, any tricks to making the job easier?
Thanks in advance.
CJ
Nothing wrong with a cheap-o
Anti-Seize all the things.
CF Veteran
Joined: Sep 2012
Posts: 1,289
Likes: 0
From: Springfield Virginia
Year: 1998
Model: Cherokee
Engine: 4.0
Found a powertrax locker for my d30 on Craigslist and may be buying it. Question, I'm on 3.55 gears now but will be going to 4.56 or 4.88 within the next month or two. With the new carrier can I still use the same locker?
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Yes, 3.55:1 and up is the carrier break. It's only below that ratio that you need to be concerned (us guys with 3.07:1).
Senior Member
Joined: Sep 2014
Posts: 896
Likes: 2
From: Phoenix, A-to-Z
Year: 1988
Model: Cherokee
Engine: 4.0
Howdy folks!
The little elbow on the front of the valve cover of my '88 XJ 4.0 is all jacked up, and had been glued in with gasket maker goo. I want to replace it but I can't find an appropriate part at Autozone... Since I have seen some other 4.0 Jeep motors with a tiny cone filter there instead of the hose from the airobox, I thought I might just do that because it is like 10 bucks and a bit of elbow grease, har har...
What are the downsides of doing this, if any?
I am aware of older motors having an oil blow-by issue, but the motor in mine had been rebuilt perhaps 20k ago and such blow-by shouldn't be a huge issue.... (hopefully)
Thanks for the insight you have!
The little elbow on the front of the valve cover of my '88 XJ 4.0 is all jacked up, and had been glued in with gasket maker goo. I want to replace it but I can't find an appropriate part at Autozone... Since I have seen some other 4.0 Jeep motors with a tiny cone filter there instead of the hose from the airobox, I thought I might just do that because it is like 10 bucks and a bit of elbow grease, har har...

What are the downsides of doing this, if any?
I am aware of older motors having an oil blow-by issue, but the motor in mine had been rebuilt perhaps 20k ago and such blow-by shouldn't be a huge issue.... (hopefully)
Thanks for the insight you have!




