Engine shut off while driving, only clicks when starting

I would agree that the engine sounds locked up. However, we need to confirm this by putting a wrench on the crank pulley bolt and turning the engine by hand. If it spins then it is not locked up and you most likely have a starter issue.

Here is a link to a guide that will help with a starter issue:

https://www.2carpros.com/articles/starter-not-working-repair

If you cannot spin the engine over, let us know and we can go from there because depending on what happened we may be able to break it loose but we are going to need to drain the oil and look for metal. Thanks

That is not great. We need to assume that since it was running when this happened that it is a seized crankshaft. If that is the case, the only way to free it is to rebuild it as the bearing are metal to metal. So that means we need to try and confirm this. The way to do that is you need to drain the oil into a clean pan and let it sit for 20 minutes so the metal can settle to the bottom. Then run it through a coffee filter. Then look for metal in the bottom of the pan and in the coffee filter. You should see a very small amount of metal but I suspect it will look like glitter. If it does then you probably need to replace the engine.

If this were seized due to rust or sitting for a long time we could try some tricks to free it but when it happens while running, there is not much we can do. However, if we don't find metal then it may be vapor locked and there are some things we can try but lets check the oil first and foremost because if there is metal, all else is just a waste of time.