Looks like its time to take that sucker to the dealer(Gulp!).
I've spent a lot of $$$$ to try and solve this problem, and it still hesitates and misses.
I'm guessing it must me electrical
1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
Monochromatic Paint (Custom Blue)
Flat Badged (front)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS