Hello people! My problem-) The idle speed sometimes varies so much, that the engine almost runs out, but then catches itself again and goes up again to 1000 u/min, the whole “sawing” takes about 1 min. and then everything is normal again! Problem is also he does not regularly, but apparently only “if he wants to annoy me”! Last week he had 2 times, then again months nothing! What can that be? The friendly finds nothing! Zündes are new, throttle flap and idle switch cleaned, everything at the old! Gruss Jürgen V40 T4 1998