dylan07,
I had tha same problem last summer. I had the Rcm repaired re-installed every thing was fine—— for awhile! Then problems just as you described.
Pizzaguy had the answer. He suggested I replace the crank sensor. Replaced it and all is well!
Ordered part from German Auto Supply
10308Bailey Rd.- Unit 409
Cornelius, NC 28031
(704) 425-2890
Bosh Crank Position Sensor - MB # 003 153 27 28

Firemanken