How to properly adapt gearboxes Xj8 x350 4.2.I will be grateful for all comments. After erasing the old adaptation, there are knocks when changing gear under high acceleration.

 

Ideally use IDS/SDD, which displays things for you.

 

Hard to make even a SWAG until you share the circumstances?

Age & Mileage? Re-learning cycle done "by the book."? All lesser-stress shifting as expected? Or not?
... Decent fuel?

Drain & flush, only?

+ Internal repairs/renewals?

+ Swap from another Jaguar, no internal work?

+ Swap WITH internal repairs/renewal?

Any change to TCM?

Any engine work done, concurrently? Scan tool ECM codes?

IOW.. is it even, really, the transmission as cause?

 

According to my transmission mechanic (who rebuilt my trans back to perfection) the adaptations don't do anything under high loads (fast acceleration). The adaptations are intended to help achieve the smoothest possible shifting under normal load conditions. At high throttle openings, the mechatronic valves are actuated at maximum speed and the shift engagement rate is controlled by downstream fixed orifices. If your transmission is shifting badly under high loads then something besides adaptations is wrong.

Good Luck
Jeff

 

Certainly possible.. My "piercing the marketing fluff veil" reads that adaptations are not, actually, to match it to how I drive it, but rather for it to better guess where it needs to compensate for wear, so as to PRETEND to be a "lifetime" gearbox, more successfully than otherwise.

There are a few decent you tubes as cover the 6 speed, better ones on the stronger - and more often heavily abused - 8-speed, Same operating principles.


Note that there is not, actually, any SHORTAGE of wear-points. .. It just survives them well-enough.