Hmm, the coils. Glad I found an explanation. Maybe I will have them change the coils first. What does that usually run ($$)?
But if my wiring harness truly is deteriorated, should I have it changed... to take advantage of the MB $$ coverage?

Car drove just fine on the way up here... even with heavy engine loads... didnt' skip once. Are the coils less likely to act up in cooler ambient temps?

Thanks again!

(EDIT: Just did a search... what about fuel pressure or delivery? Since it seems to be fine until the engine is revved high?)

__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)