1998 oldsmobile 88, low mileage, runs good. Problem comes about occasionally when attempting to crank car. Headlights, etc. come on when cranking car and problem will come about occasionally when the ignition key is turned to crank and nothing occurs, no sound, no clicking, although interior and headlights will come on. This situation may occur daily, or once a week, or one time over period of two to three weeks. When this occurs I am stopped cold, so get out of car, lift hood and shake all lines to and from the battery and after trying to crank for several occasions it will then crank. Doubt the shaking and moving of cables, which are tight on battery have anything to do with the car eventually cranking. Battery checked and in good condition, all poles clean and clear and all cables secure. The car starter has not yet been replaced as a possible problem, although there is no sound to indicate a starter problem and other than the occasional time the car will not crank every thing works very well.