Thanks for your suggestion. It solved my Dad's Jeep problem. Worked like a charm! $29 ignition coil from AutoZone. Disconnect negative able from battery 1st. It also requires both a 10mm wrench and socket wrench to take out because what's holding it together is a bolt and nut. I'd figure it would use Engilsh not Metric tools since it's an American car, but no - it was Metric. Becareful when removing nut cause you could easily lose it. Putting it back on wasn't that much of a problem - finger tighten it then use the wrench and socket wrench to tighten.