>> When I accellerate hard in the three lowest gears I can feel
>>> distinct changes in the torque delivery. Like the turbo boost gets
>>> to high and it starts cutting boost and then adding adding it
>>> again, after which the whole cycle repeats.
>>>
>>> In fourth and fifth I can't feel this anymore. Overal performance
>>> is, as far as I can tell, exactly as it should be.
>>>
>>> Is this normal? If not, what may be causing this?
>>>
>> If it is the same feeling as if a "otto-engine" of the old type
>> (carburator) gets to much fuel (loosing power, coming back again
>> until it accelerates normal at higher rpm´s it might be the
air-mass-
> meter. I had a similar problem. My mechanic told me it quits quite
>> often in the TiD. If you have still warranty you should see your
>> dealer quickly since the part is not very cheap.
>
> Lets hope not, because that was already replaced three weeks ago.
> With the broken air-mass-sensor all the power was gone. 0 to 100 km/h
> could be accurately measured with a sun dial so to speak.
> My problem feels more like the boost getting to high and the motor
> management over reacting to get it right and not quite succeeding.
> By the way: today I also felt it in fifth gear. Not as pronounced as
> in the lower gears, but clearly noticable.
Yesterday I noticed something weird: when I floored the throttle at say 80 km/h I again felt the torque changes, but when I resumed the cruise control, set to 120 km/h, from the same speed I didn't.
Does anyone know how the throttle system on this particular engine works? Could it be a throttle-sensor that is not functioning properly, thus causing the engine to think I am moving the trottle even though I'm not?
Mark