The mechanical fan itself probably contributes to the pump wear/death. That is the case for the Ford 7.3L powerstroke also (there's a cast iron pump from a Navistar application that lasts much better).
My original KJ pump died abruptly. Gushing coolant and failed bearings. It's replacement...
I'm used to yards that won't let you pull a diff apart. A posi on the shelf often fetches as much as whole rear end.
Watch the ring gear bolt-hole detail (3/8" vs 10mm), or get the r&p also.
Definitely change those!
That's the main cause of the intermediate shaft spline failing.
I found plastic ones in mine, and put in the proper roller needle bearing replacements (Spicer).
How much additional correction is needed?
I mean, the VSS reads the axle speed (corrected by the r&p ratio already) and the shift points are already set for the vehicle speed (which is now more correct with bigger tires).
Its not like many other vehicles where driveshaft speed is read and the...
Fwiw, we don't all need 4.10. That's a side effect of the auto having a very tall OD ratio.
I regeared from 3.54 to 3.73. (6spd). Swapped complete diffs from an automatic. It was the perfect correction for the tire size change.
I'm running the Teraflex spacer lift with aftermarket control arms. 150,000km since install. Can't complain. I did eventually put in the diesel coils and Rancho struts.
There may be some variation in angle-ability between OEM and various jobber.
Ours is lifted 3", with 3/4" cradle drop. The only time the CVs get 'lumpy' is on the floor jack, and the suspension goes to full droop. These are jobber CVs now - not OEM.
Possibly a bad wheel/bearing sensor?
ABS was optional on the Liberty. Maybe take the option to ignore/defeat it? Been very content with our non-ABS KJ - just sayin.
Because I want all the grip from a trac-lok that I possibly can get. When it's used up, time to upgrade.
Checked my gear oil. It's super-generic 80W90 with a small footnote it meets GL4 and 5 spec.
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