The hesitation problem is a KNOWN problem at MB & as far as I know the fix is "re-flashing" the fuel system computer with up-dated info.
I assume that preminum fuel is being used??!!
Do you know what codes HAVE been stored (read from) in the TRANS computer?
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)