Crank sensor changed .Be aware that Dr Tranny works by making the clutch in the TC more slippery. Unfortunately a byproduct of this is it makes all the transmission clutches more likely to slip.
So you need to make sure that the transmission is thoroughly flushed out before the new TC goes in, or accelerated clutch wear will take place over time.
I am aware of what the fix does and will have the box fully flushed if I change the TC thank you.
You need to make sure that it's definitely not an engine borne vibration from a failing injector or crank sensor, as these can also cause issues that feel like the TC to an inexperienced technician.
Engine runs well as sweet as a nut when cruising down motorway at 70 mph 1800 rpm.
Vibration occurs at around 1500 rpm at varying speed and load .
Drop or increase rpm and vibration goes away.
Fairly sure its not engine related