hi guys a bit of help please
my gear changes are been harsh ,oil chance been changed twice in the last year so more of a mega change ,tq has been replaced .....could it be the solenoids on there way out or something else ?

Definitely worth reading the solenoid adaption values, if you have suitable diagnostic equipment, to see if any are extreme (i.e. >300mbar) as this would give you an indication if any solenoids were faulty. Failing that, you could just risk going ahead with a new solenoid set (ZF p/n 1068 298 044) which costs around £280 : https://www.sussexautos.com/products/6hp19...68-298-044, especially if they’ve never been replaced before.

Phil

hi yea i have the gap tool ....will i find the reading in the live data(fairly new to range rover/gap tool world) and would you suggest getting gearbox upto temp ?

The gearbox temperature doesn’t matter because the adaption values are determined over a long period of time. I don’t own an IIDTool or a Range Rover (any longer) so others would be better placed to tell you how to drill down through the menus to find this data.

Unfortunately, the quality of the information is a bit hit-and-miss, sometimes yielding ridiculous values. Basically, you’re looking for the:

1) clutch fill/charge pressures (in mbar)

and

2) rapid fill/charge times (in ms)

for the five clutches A, B, C, D & E.

It would appear that the adaption values for the ZF 6HP28 transmission, used in the 5.0 litre, are simply not possible to read, but as yours is the 6HP26 transmission you at least have a chance. I’m not suggesting that this is an issue with the IIDTool, more likely a Land Rover issue, as diagnostic tools can only report the values that are provided by the controller.

Phil

Is this what I should be looking at ?

Click image to enlarge

No, those are the live values for the solenoid currents. You want ‘transmission fluid filling pressure for adaptions’ and ‘transmission fluid filling time for adaptions’

https://www.fullfatrr.com/forum/post551680.html#551680

Phil

ah right ok ill have another look ....

Are adaption values the car adjusting to driving style, or adjusting to gearbox variables/wear ?

Good question-well asked …..pass lol I don’t know still learning myself

RovingCanary wrote:

Are adaption values the car adjusting to driving style, or adjusting to gearbox variables/wear ?