The car has 41k miles , new plugs,air fuel filters ,O2 sensor, fuel dist potentiometer ( set correctly) etc..When the car is started and is in closed loop it has no issues and will perform normally. When warmed up the car will accelerate to about 2000 rpm and then it acts like the throttle is disconnected. if you lift your foot momentarily it will resume accelerating.


I'm thinking EHA or a vacuum leak somewhere. My friend is a factory trained MB tech , but we are old and have poor memories ! ideas/