I have been fighting a strange "limp home" problem on my '93 300CE (124.052) for over two years. Every morning the car goes into limp home after 1000'. There is no dash light. I restart the car and it never happens again until the next day unless it is cold and it might take two different failures for it to clear. We have replaced everything on the car except the license plate to no avail. I have gotten many suggestions from you the forum members but the fix has alluded us. From the git go, MB Doc said it was an electrical problem which we agree.
I bought a copy of Alldata for this car. There is a micro switch on the pedal linkage under the dash. When we found this our hopes raised and we replaced it. No help. However in reading about this switch in Alldata the following statements were made: "The safety switch for the acceleration pedal position sensor then takes over the voltage supply for the fuel pump relay or the engine systems control unit. So that there is no switch gap when the accelerator pedal is moved quickly, a SWITCHING TRANSISTOR takes over for the fuel pump or the engine control unit for a short time. The maximum current flow may not exceed 1 amp. The switching transistor is not protected from short circuits to ground."

Does anyone know about this transistor or where it is located. Do you think it might be inside the Electronic Throttle Actuator? Anybody have any ideas?
Anziani
'93 300CE 202K
'95 E420 122K