If your Ford Explorer has starting running very poorly, or stopped running entirely while showing symptoms of lacking spark, your Ford Explorer ignition coil is most likely the cause.
Any time the Ford Explorer ignition wires exhibits physical damage either to the ignition wire or the boots, the Ford Explorer spark plug wires should be replaced as preventative maintenance.
Ford Explorer Copper and Platinum Spark Plugs by Bosch, Denso and NGK. Replace the Ford Explorer spark plugs once a year for optimum vehicle performance and increased fuel mileage.