Finally a reasonable car is parked in my garage again, I picked up the newly purchased V8 4.2 today. This was really a ride home, but of course a clouded one, as is the case with the V8 purchase.
As indicated last week, there's something about cruise control. I really seem to be in the middle of it every time. to grab (because my previous one had never had a working cruise).
It's pretty shrill, and that's the only time the cruise cruise is about. 80-100km/h in (or maybe only randomly there), and not always, and turns off pretty soon. He won't go in at 140, he won't go in at 60, I only had him running once or twice.
I could imagine that it's the pressure hose or the pump, which electronic seems to me quite impossible given these strange gestures. Or could it be the ECU? When I clicked the relay I didn't pay attention, but did one of you have this strange behavior before? That he only stays in there for a moment and then shut down again?
But what's strange again on the other hand is the fact that my MFA always gives reasonable and correct values in the cockpit, but I always have at least 400km of tank, even if it is almost empty. What can this be?
The analog displays and all other digital ones are absolutely fine and show plausible values.
Also I have to change the stupid sliding roof relay myself, but that does not rush, too is it
. The seller could be beaten for the fact that the rather old Alpine amplifier was mounted so below the glove compartment that it pulls down the lining thanks to its weight. I've got to take care of that too. 
Because I'm in the process: engine and gearbox are running great in themselves, when I walk off the gas on the highway, and then get back in full again, a quite jerk goes through the car, is there one of the engine suspensions not quite clean ? The gearbox is probably not very much to do ... And what I'm surprised about is that he's got an absolutely quiet idleness of the needle, but he feels like he's "pulsing" quite easily, but standing up just like the pulse of a heart and approx. in frequency. But it remains very constant with the speed, and does not fluctuate, nor does it virtually fibrate, apart from the strange pulse. Acceleration and driving otherwise very clean. Does anyone have an idea?
Thank you for your help, I'm sure there's something else coming up, but that would be the acute things.

Thank you and greetings
Bastian
) mit Pumpen, Membraenen, Schlaeuchen etc. zu tun haben, sondern moeglicherweise tatsaechlich Steuergeraet, Leitungen, oder der Lenkstockschalter. Den letztgenannten habe ich mal austauschen lassen. Als sich herausstellte, dass er nicht der Uebeltaeter war, konnte ich ihn einfach wieder zurueckschicken + Geld zurueck. Unglaublich eig.