Changed alternator, now car won't start
 

I brought my 20003 sedan into a local autoshop to to replace my alternator, alternator/ac belts, and battery a few days ago.

Everything is fine until earlier today when the car would not start, it didn't even turn over. on the "ON" position, nothing happened, and when I turned the key all the way to start, there seem to be a jolt of electricity (interior light flashed on and off), then nothing.

After 4 failed attempts, the car finally decided to start again.

What do you guys think is causing the issue?

Starter motor?

Check Crank Position Sensor which is known to go bad and make sure all connection to alternator and battery is tight and clean. Also ensure all fusable links and main fuse on battery / fusebox in front of battery and fusebox behind battery is all good. I would take it back to the shop and have them diagnose the issue since it started after the alternator install.

It turned out the "autoshop guy" did not tighten the connector bolt to the battery. UNBELIEVABLE how he can forget such a simple thing.