What to look for when buying a TD4 auto?

[CJH]

I am looking at a 2001 TD4 auto for my other half. What do I need to be aware of and what should I check. It has a full service history which is something.

[woko]

Smooth changes in the auto, They are expensive to repair. No blue smoke on start up, this is the 1st sign of the crankcase breather filter not being changed, which can lead to turbo failure. viscous coupling not seized, do a search on this forum, heaps of info. no coolant leaks, water pumps are common. All warning lights go out on dash. ABS and SRS faults can be expensive.

[CJH]

Thanks for the tips, I have been going through the forum and think I have a fairly good idea for what to look out for now. If all goes well, I will have it Saturday.

Does anyone know what the torque converter stall speed is for this auto?