Ok so I dd a 92 oldsmobile cutlass. Very reliable except for the fact that it will refuse to start at random times. Now if I zap that battery with another car it will start again immediatly. When I try to start it and it doesn't start there is no sort of cranking at all. I just hear a buzz. Once it starts with a jump its fine, no sort of charging issues. I have had the battery checked, the alternator and starter checked and my mechanic still has no idea. I even checked out the fuses to see if anything was burnt out but still I have no idea. I had the alarm disconnected cause i thought that maybe there was a cut off screwing me up. Sometimes it will even start up again by itself after 5 minutes without a jump. Other times I will have to leave it for a few hours. And even after a few hours its a delayed start, I will turn the key and it may take an extra second or two for it to start. Anybody have any advise of other things I should look into? Maybe someone else had a similar problem? Thanks!