my car was running fine slight judder every now and then but one day rev counter stopped working parked it at home next morning it started i left it to idle and it stopped and would not start i called the recovery people they managed to start it and it died again he tried again and it did the same he said i must replace the crank sensor and ignition coil as the car is loosing its spark i have done this and it started and run for about 20 min it stopped again and it wont start can anybody please help me

shane, January 2009