You'll have to bear with my ignorance as i am only repeating summin i caught on the end of a phone call from a mate lol
basically he has a cavalier eco**** thing (recently acquired), when revving the engine it cuts at 4500 (almost limiter like). Upon starting it seems to try to fire engine backwards (like grossly retarted)
took it to a vaux dealer and they plugged it in and said yep its your crank sensor, so this was changed along with the cam sensor but still no change.
any suggestions or similar experiences that may shed some light on this please?