Hi, I just came from the MB shop w/ my E300 still randomly stalling -a safety hazard on the road. We're stumped - so my MB Tech referred me to this site...

Stalling: Sometimes it just wont start, other times it stalls in motion. Total random, no warning, just cuts out very abruptly. Usually I can pull of the freeway, sometimes in town or construction everyone has to wait behind me... Sometimes restarts, sometimes won't. Sometimes green/red lights flash, sometimes not. Getting worse over past 18 months from ~monthly to weekly to now almost daily. Usually starts after pounding on ECM box, not always. Have Snap on Scanner on it. Sometimes looses communication when stall, sometimes still communicates and says everything OK including Drive Authorization, etc. Sometimes random codes like P1480 glow plug, P1617 control module, P1622 inj pump shut off, but usually just the ABS/ETS codes below.

ETS/ABS: Repeatedly throws P1520 cruise switch, P1702 stop lamp, and P500 VSS codes. Sometimes ETS/ABS lights on, sometimes the yellow triangle, sometimes the speedo/odo won't work. Sometimes all OK.

Parts thrown at it so far: Changed the brake switch and the ETS/SPS module -no difference. Regrounded all grounds, check harnesses wiggled terminals for corrosion - no difference. Purchased used IFI module (Engine ECM) -cannot get car to accept it. At this rate I'll soon have more money in parts than the car is worth (new IFI alone is $1400)

Questions: Should I throw an R25/2 Throttle position sensor at it? Or other? Or keep working on the IFI swap? What do I need to swap the IFI? Believe it is Dos2 drive authorization? So do I need DOS unit from orig IFI vehicle as would be locked together after 40 starts? Or can it be flashed somehow (won't accept flash from my Snap-On or either the MB tech's expensive scanners)?

Thanks in advance for any assistance -would be greatly appreciated -hate the thought of having to drive a GM gasser again!!! Kevin.