1982 300D rough, low idle during warmup only
My problem has been coming on slowly, it seems whenever starting the car hot or cold i have to depress the accelerator pedal once before turning the key and it will start no problem, use to not have to do that. now that it is getting colder outside after doing this procedure on the first start of the day the engine seems to have a low rough idle and sometimes have to hold the accelerator with slight pressure to keep the car from stalling, also some of the time the idle will slowly surge a few times, once the coolant temp gauge starts to rise the problem will go away.
