Climate's finally going. But new problem !!!!

Hello. So, my climate is going. New sealing rings and new compressor. It's getting cold. I've had this serious problem for five days. I start the engine, Teperatur doesn't matter, drive a few kilometers and suddenly no, really no more power there. I can fully penetrate the accelerator, nothing happens. ==References== 4 or 5 hundred meters it then ruptures, and the power is back. It's happening again today. I'm on the car bahm with approx. 130 KM/h Remember a jerk, all the time and loss of performance. It's also funny, I started today and had air conditioning on. 20 degrees and automatic. Suddenly, the car pulled back. I pressed the OFF button of the automatic air conditioning system, and it stopped jerking.Later I turn on the automatic air conditioning system again and everything is fine. It just seems that if the car is standing for a few hours and I'm leaving. ==References== We'll get off at 2 km. Full throttle and zero power. It's like putting on the handbrake. Or if the car is jerking, and I switch the automatic from D to level 3, it stops jerking. Are there men of Mainz in the V 8 ????????? . The car has too little pull-through power. On the highway, according to Tacho, it is about 280 km/h. But the ,, suit / pull-through force is very thin. If I'm still getting the climate full, I mean, I've got 45 hp and 3 cylinders. Brakes are OK with me, today I would have rolled out almost only because nothing came. Then one back and he ran again. But despite everything, I don't have any performance. Please help me again.

greetings

Rainer