Hello I drive a Ford Fiesta Ghia Bj. 96 with an Endura-E engine. Some time ago I had the problem that I had only up to 4000 revolutions train and then the power dropped or was reduced. On Aoobahn this means: I drive almost 140 and just under 4000 revolutions and the drive force leaves after almost 3700 turns and then he pulls again at once… without taking the foot off the gas… In the autumn I drove then on Hokenheim 400km and after 300km he started to jerk And then he drove over the 140km/h again. So he ran until yesterday… after I drove to my parents and everything was fine back home… Then I wanted to go back to Regensburg and the shit started again as described above,, sometimes he didn’t even have a train after that, or if I started and started immediately he pulls …. Sometimes also in the different corridors that he doesn’t go over 4000 revolutions… Manchman I turn him over the 4000 and then he drives again with full gas… Who knows what it is? I would now reset the control unit and look at the spark plugs…. Does anyone know anything better or more accurate? Thank you in advance…..