[AlCan]

Thanks NZ XR6,

I agree that some of the problems might be one or more actual faults rather than excess wear, but that's half the fun! I'm not ready to give up, I'm learning so much. Hopefully, it won't go on too long though. Might have better things to do soon.

Anyway, the latest problem is the dreaded TLF - Transmission Limited Function. This is brought on by the 'coughs' I thought she was having, but my latest observations suggest something completely different. It seems to be another clutch slip issue, and maybe the Adaptations since the recent Clutch Learn are behind it. What seems to happen is that (mostly following a change up), the clutch pressure seems to cycle for a few seconds, and at the low points, it starts to slip. Instead of reducing engine power as in the other case, the trans seems to whack up the clutch pressure and the clutch suddenly bites hard. It feels like a cough, but I think so far that it isn't. I'm guessing this behaviour is what some have called "shunting", and that may be a fair description.

I've captured the DTCs and some PID traces but haven't had a chance to look too closely yet. FORScan doesn't display enough lines at once so hacking a spreadsheet for that. That should be revealing.

My next plan is to drain the trans oil, pull the cover and maybe the Mech Unit and take a look. Will have a search, but any tips would be great.

AlanM, if you're about - have you tried replacing the sump filter, and was it successful? I'm worried that the heating and deforming may actually damage the filter membrane.