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XJ Ask the Question Thread
CF Veteran
Joined: Dec 2010
Posts: 1,246
Likes: 1
From: Missouri
Year: 1998
Model: Cherokee
Engine: I6 4.0 L
Originally Posted by sycoglitch
<img src="https://www.cherokeeforum.com/attachment.php?attachmentid=80876"/>
It's the black rectangle right below the TB on the drivers side I the TB. It's held on by two torx bolts on y 01 yours might be different depending on the year not too sure
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Originally Posted by Nperryman
Thanks man. How can I tell if the map sensor and o2 sensor are bad?
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Originally Posted by Nperryman
Also, so it is the up-stream sensor since it is before the cat conv. ? The down-stream is after the cat conv.
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
Well your rear one should always be standard. The front one is a high pinion reverse cut from '84 to '99, *usually*. The '00 and '01 uses a low pinion standard cut due the exhaust downpipe and some other bull.
CF Veteran
Joined: Dec 2010
Posts: 1,246
Likes: 1
From: Missouri
Year: 1998
Model: Cherokee
Engine: I6 4.0 L
Originally Posted by sycoglitch
Theres several cats the upstream cat, my is a dual cat and the downstream one that's right before the muffler. Then there are the o2 sensor above the upstream cat and sensors below that upstream cat
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Originally Posted by Nperryman
Okay, so will I need to order one upstream sensor and not the downstream sensor?
Junior Member
Joined: Nov 2011
Posts: 44
Likes: 0
From: the up eh!
Year: 89' 92'
Model: Cherokee
Engine: 4.0
thanks for the links. very good info now i guess the next question since all of the links were showing that swap onto a wrangler. do the motor mounts line up with the 4.0? did the google search and there was not much luck there a few people on other forums asking and a few people telling them its not possible. i would be almost certain that the bellhousings are the same just not realy sure on the motor mounts. thanks again for the help it is greatly appreciated.
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
Anyone know if there's a way to upgrade the axle shafts in a Dana 30 with CAD to beefier 2-piece shafts? I don't really want to get rid of the CAD system entirely because I like having it act like hubs, but I do want some strong shafts to accommodate bigger tires. Anyone heard or know of such a thing?
Newbie
Joined: Sep 2011
Posts: 27
Likes: 0
From: Crosby Tx.
Year: 1993
Model: Cherokee
Engine: 4.0
Thanks. But my front doesn't look like it is high pinion, but I will take another look at it when I get a chance. If it is not a high pinion,that makes it standard. Right????
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
Yes. It probably is a low pinion because like I said before, the 2000 & 2001 model XJ's use a low pinion, standard cut.
☠ 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
It's very obvious which one you have. The LP is flat on the bottom back to the yoke
LP Left, HP right
