All of those codes are pointing to an issue with the throttle actuator.......

Would NOT cause a fuel mixture issue, but would(could) cause an erratic idle speed.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Thanks,

I just pulled them again with the switch in the on position (since i pulled them with the engine on by mistake yesterday) = Same codes!!!

I erased the codes, and i am sure some of them will disappear...

so no need for a new oxygen sensor? my exhaust smells terrible and gas mileage is terrible also....

MBDOC, do you have any idea what might be wrong with the throttle actuator? It has the rebuilt harness, and i cleaned it while doing the head-gasket...

thanks,

__________________
1993 300E, 2.8 M104 .....