We experience increasingly juddering when accelerating uphill around 2000 rpm in our 2007 TDV8 3.6. Based on the forum stories of the syptoms of TC failure, I think it most likely is the TC on the ZF 6hp26 gearbox. Do you provide new (or refurbished) TC for this gearbox/engine? I'm not sure of the part number, I think it could be FF008185, or Y94?

And: Will a recording of live transmission values from the IID tool BT be valuable to diagnose this better?

If you could just PM your VIN please.

I can't really diagnose anything over the internet/phone for something like this You can paypal direct using - www.paypal.me/duckworthparts
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Doesn't sound like classic TC failure to me, get the FF checked by an independent or a dealer, there are a lot of things that could cause those symptoms...

TC failure is usually speed related, just as it locks up, as opposed to engine speed...  Pete
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