Sep 21, 2015, 03:49 PM
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XJ Ask the Question Thread
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
i went and did some light trails today. when in a bumpy terrain with 4LO engaged, i got a couple loud clunks or "bang" if I can call it that, coming from the front end when turning. I believe it is from the diff, but unsure if it's normal or not. I was not on pavement, but it wasn't slippery either. to me it's not normal but in 4hi full time and 2hi there is no sound to be heard (i have not tested 4hi part time, never use it)
normal? not normal? how to tell without opening the diff? there is no unusual sound from that area when driving "normally".
normal? not normal? how to tell without opening the diff? there is no unusual sound from that area when driving "normally".
Junior Member
Joined: Jun 2016
Posts: 88
Likes: 20
From: Colorado
Year: 1988
Model: Cherokee (XJ)
Engine: 4.0 (Renix)
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
CF Veteran
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
I have done the np242 swap behind the ax15 and I would say I love it. And will do it again if I have the opportunity to do so.
CF Veteran
Joined: Aug 2015
Posts: 1,226
Likes: 11
From: Laurium, MI
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L
Not really true. The front axle will be allowed to go faster around a turn still, and as long as you aren't applying throttle(for an autolocker) and don't have the selectable locker locked, all 3 diffs will differentiate normally.
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
My statement still stands, and it IS true. To take advantage of the FULL BENEFIT of the Selec-Trac NP242 system, it is best to have LSD in the diffs rather than open or locked. That includes auto-lockers. The torque-biasing in the transfer case is most efficient with the same torque-biasing is in place in the differentials. It's more than just about "allowing the front wheels to turn in 4wd on pavement", it's about a full 4wd system that allows efficient, full-traction in multiple surfaces.
CF Veteran
Joined: Jul 2013
Posts: 1,154
Likes: 40
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
Have some slight wobbling going on in my front end while at highway speeds. no death wobble, but enough to feel in my steering wheel and if i take a look at the tires i can see them going a little back and forth too. Suggestions for where to look first? i was thinking u joints
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Have some slight wobbling going on in my front end while at highway speeds. no death wobble, but enough to feel in my steering wheel and if i take a look at the tires i can see them going a little back and forth too. Suggestions for where to look first? i was thinking u joints
CF Veteran
Joined: Oct 2013
Posts: 5,924
Likes: 203
From: Greenville, SC
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0
Are these the only two parts I need to rebuild both the front stock xj driveshaft and the zj front driveshaft I have in the rear? Obviously 6 u joints and 2 of the sockets Spicer 211355X Socket Yoke Assembly https://www.amazon.com/dp/B00GAPLVCA..._9o7FxbFWC0DXV Spicer 5-1310X U-Joint Kit https://www.amazon.com/dp/B009X1X91O..._Qq7FxbHRTM215