No spark on a 2.8. First check for voltage at ing.module,and ground.Check resistance in crank sensor circuit,A to C 900 to 1500 ohms,at ing. module,left side of engine ,crank sensor is located on right side of engine block. Can be veiwed with engine rocked ahead and secured with upper mounts. next check for AC voltage signal at terminals.If OK the problem is in ing. module.