Hi! Bonneville 1993, 3.8 SCh has a prob;ems with a (+)
full trottle. Simpthoms are like follows. When slow push - all is ok both at idle and driving. When fast push both idle and driving (kick-down) engine starts shaking till release pedal. All spark plugs, wires, coils, O2 sensor are new. NGK, Tayler, MSD.
PLease advise what can it be.
Last summer I had the problems with fuel pump - when hot fuel pressure gone down after full trottle but now here in Russia the temperatura near 0 degree C.
Thank you in advance