Hi Jim,
I e-mailed you regarding eprom update. I think my computer is faulty and I'm looking for used one right now. I have cleaned MAS but lambda is still around 90% so I suspect ECM for not properly correcting air/fuel mix.

The car is 92 500sel. It has one Electronic Throttle Actuator. I think I caught a problem. ASR comes on when I start the car in Park but not in Neutral. It comes one after though. I removed neutral safety switch and highly suspect it after I read your menu 24. Yesterday I adjusted Neutral switch and today I drove the car and ASR did not come on. (knocking on wood). I probably will order new switch just in case.

Main engine wiring harness rebuild was one hell of a job. It took me around 8 hours. I ran every wire from main connector to consumer. I used to leave about 3/8" of old wires on each side, solder new wires to that and then I used heat-shrinking tube over soldering point. ETA wiring was easier to replace. My car has older version plug on passenger fender so I went to dealer and bought wiring with plug, opened ETA, soldered out old wiring and soldered new ones in. Believe it or not but ETA wiring was in good shape, no insulation was crumbling, and no wires were shorting.

I hope this info will help somebody

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod