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XJ Ask the Question Thread
No, I don't lick fish.



Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
Newbie
Joined: Mar 2015
Posts: 12
Likes: 0
From: the wilds of montana
Year: 90
Model: Cherokee
Engine: 4.0
The 90 only has one O2 sensor so you definitely need it. Sounds like you have a header for the 91 and up. My upstream O2 sensor is on the down pipe, yours I believe is on the header just above the fitting for the down pipe. I will defer to the Renix experts for possible workarounds but you do need it to run properly.
The outlets are different and there are no bungs for O2 or EGR tube.
Have a new downpipe made with an O2 sensor bung welded into ir as close to the header flange as you can. Have them use a shallow bung. You will have plenty of harness to reach the O2 sensor's new location.
Have a new downpipe made with an O2 sensor bung welded into ir as close to the header flange as you can. Have them use a shallow bung. You will have plenty of harness to reach the O2 sensor's new location.
Thanks for the info guys. It seems like anytime I buy parts, there is a problem with the year. couldnt wire up the stereo because I was looking at a 90 wiring diagram, but the guy at crutchfield said that the wire colors I was describing were on a 91. I dunno!?
didn't needed a jack or a cheater pipe, all I needed was my 18" breaker bar. Lol
No, I don't lick fish.



Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
One thing I've learned over the years is that Crutchfield is GREAT for home audio, and for looking up specs on audio equipment that you want.... but that's pretty much where it ends.
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Question. On my 01 with np231. Can I just unhook the front Ds at the pinion and hook it up under the jeep. Or does the front yoke of the TC spin in 2HI?
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
No.
Pundits may suggest that the yoke may spin to what is essentially hydraulic action, since the disengaged sprocket is resting on a moving shaft, but that should be stopped by a good zip ties.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Probably test it tomorrow. Need a temp solution for highway driving. Next month gonna buy a new drive shaft but until then i want to see if i can string it up for any long drives where ill be doing 65mph.
Beach Bum
Joined: Jul 2011
Posts: 6,123
Likes: 22
From: Cape Hatteras, North Carolina
Year: 2000 WJ
Model: Grand Cherokee
Engine: 4.0
^ Sketchy!
Just take a 5/16" 12-point wrench to it.
Ever see what happens when the front end of a driveshaft drops to ground and encounters a crack in road?
Just take a 5/16" 12-point wrench to it.
Ever see what happens when the front end of a driveshaft drops to ground and encounters a crack in road?
Last edited by SteveMongr; May 24, 2015 at 06:33 AM.
It's only 4 more bolts to remove it completely. Better safe than sorry
Member
Joined: May 2013
Posts: 117
Likes: 0
From: New Harmony UT
Year: 1998
Model: Cherokee
Engine: 4.0L I6 Power Tech
Anyway, I didn't have any of those problems on the passenger side. Everything came apart and went back together as it should (thank you Jeep gods) so now I just need to put some miles on the springs, torque to spec, repeat.NOTE for others who might be contemplating the Rubicon Express 3.5" leaf packs...the indexing pin did not fit in the hole on the spring perch at all. I ended up taking out both index pins and grinding off enough material to fit in the holes.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0




