BOUGHT A 2000 MUSTANG 3.8 LITTER 130,000 CLEAN BUT HAS BEEN SITTING GARAGE KEPT WAS TOLD IT NEEDED A FUEL PUMP AND A BATTERY I EITHER TESTED IT BEFORE I REMOVED THE GAS TANK AND IT FIRED .I REPLACED THE PUMP INSTALLED A NEW BATTERY AND NOW THE ANTI THEFT SYSTEM WONT DISENGAGE IVE TRIED TO TURN THE KEY AND LET IT RESET NOTHING I ALSO TRIED REPROGRAMMING THE ECU BY JUMPING THE POSITIVE BATTERY OFF THE NEGITIVE TEMMINAL DISSCONNECTED STILL NOTHING IM AT A LOSE AND I'M ON A TIME FRAME CAN SOMEBODY GIVE ME SOME INSITE AS TO OTHER OPTIONS UTUBE DON'T SHOW **** !