Today when i went to school, my car started just fine. But when i got out of class and went to the grocery store, and tried to start the car it would not start. I own an 89 oldsmoble Regency. At first i thought it was the battery, however the lights come on and when i recieved a jump it did not come on. Then i thought was the gas because my tank floats sometimes. But that wasnot it either. So I put water in the cooler. Did not work. I checked the oil and the anti-freeze. I am at a complete loss here please help me!