have a big problem with my car Opel astra f GSI 1.8 16V with 125hp!!! crankshaft sensor new!!Both original opel parts spark plugs new timing belts completely new fuel filter new! control unit new ignition coil ignition cable everything in order also the AGr valve!!! am now totally at the end with the nerves has become a riddle for me maybe this can be the knock sensor? maybe one of you can help me and give me some tips? many thanks already in advance! – No, no, no, no, no, no, no, no, no.