Engine won't fire up! Options

[X_RunnerGT]

So recently my car stopped wanting to start. I turn the key and the starter cranks continuously,but it won't turn over? I left my key in the ignition, turned, yesterday and it fired up. Once it's started and it's been running for a while it'll start, but now nothing? Any ideas about what I'm dealing with. I've been told the timing belt, the fuel pump, fuses, which from the ones I've checked are all good. Any help would be appreciated...

[VavAlephVav]

No CEL light means no power to the ECU or it's just not working. Again intermittent problems where it works one minute and not the next make me think electronics. It would only take <30min to get in there and take that computer out, open it up and examine it. Often if you look close there is some sort of damage you can see on the circuit board of the ECU. If you get lucky you can find somebody with a part-out thread selling one for $50. There are a lot of guys who've swapped out the stock motor for the 3sgte and have the stock computer sitting there in their garage.
And you can get one at a salvage yard pretty cheap as well.

Because you have a '96 you'll be able to use any ECU from a 96-99 ODBII computer as long as it has the same options yours does; 5sfe, manual/auto, cali/fed. It's plug-and-play you don't need to have it programmed by the dealer or any silly horse**** like that.