Got this 92 SC400 in good condition runs great start great the problem I'm having is that when I drive it some where, it doesn't want to start. it just turns over and wont start but if I leave it overnight it starts don't understand why its doing this. Its done this several times already and had to tow it home. But it will start the next day.

 

Could be a few things, but I'd get your alternator and batter checked for sure.

Autozone does it for free I think.

 

Why would he need to check his battery if it turns over.

I sounds like your fuel pump relay may be going out. Search for the 12v fuel pump mod or look in the FAQ stickied to the top of the forum. That's free and might solve your problem, worth a shot.