Make sure the battery-cable retaining-clamp screws or nuts are tight. Ifthe positive battery cable falls down on the driveshaft, you might get asurprise. A few years ago, we had a car in for repair in which thepositive battery cable was left on the driveshaft. When the insulationwore off, the positive cable shorted out on the driveshaft when the carwas accelerated. The positive battery cable has no fuse inline, sodamage can be severe if it shorts.