installed used northstar.now THE DIC SAYS SERVICE IGNITION SYSTEM AND THE ENGINE STAYS REVED AT 2000 RPMS.NEEDING HELP ON WHERE TO START BEFORE I CHOOSE DEALER DIAGNOSIS.ANY IN DEPTH SITES ON IGNITION REPAIR. ANY HELP WILL BE GREATLY HONORED.THANKS.SHOULD I SELL NO BUT THIS REPAIR PROCESS HAS ALREADY TAKEN TWO MONTHS.HHHEEEELLLPPP!!!!!!!!