Car won't even crank...

Next time "it does this," try the following:

With the key held into "start" with one hand, wiggle the shift lever through park and neutral

If no result, get out, open the hood, and be careful not to bump anything more than you must

Identify the neutral safety switch wire on the start relay. It will be the "non yellow" "push on" connector of the two. Remove that wire, take a clip lead and ground that terminal

CAUTION: With this terminal grounded, the car WILL START IN ANY GEAR so be careful

If no result, probe the two push on connectors on the relay with a test lamp while turning the key to start.

Make sure the yellow wire gets power, make sure the one clipped to ground has NO power when holding the key to start

Listen for a click from the relay

Finally, with a metal object, jumper across the two large exposed terminals on the relay. The starter should crank

If the car does not start using the key, and the above is met, replace the relay

If the starter does not crank when jumpering the exposed terminals of the relay, jumper the two starter terminals right at the starter. Could be the wiring!!! between the relay and the starter.