Your a genuis, i think this might explaina lot of things!
My car has been at my local Mercedes dealer for nearly a month now...

Problem has been under WOT the car hesitates/jerks, call it what you will...Under normal driving conditions its fine.

They have checked everything like the K-Jetronic etc and its all fine. Infact 90% of it is new. New fuel distributor, EHA, Injectors, ECU, Fuel pressure regulator, Fuel pumps, Accumulator.

So anyway they are now going to put an Ignition control module in there and see if that makes a difference.

But this sensor, number 59 might be the culprit? My car has no other issues at all. Starts fine, hot or cold...Idles fine, although in reverse sometimes the idle drops ever so slightly then goes back up. its an auto by the way.

No one can figure it out and to make matters worse my friend has the same car with an autobox with the same problem! He has lived with the jerking on kickdown (WOT) for the last 7 years!