I have a 91 Mercedes Benz CE 300 I was driving home and the lights came on like the alarm system gone off parked the car went to the car and it cranked over but would not start did some tests I am not getting any spark to the plugs new crank sensor cam sensor cap rotor still no spark I have had some proplems with the alarm going off on its own and when I crank it over I have no takomeder reading until the battery starts to crank the motor at a slower speed need help badly thank you.