Is it electrical?

[Andrizzi_d]

2007 sonata would start dying and not start like the battery was dead as if the alternator needed to be replaced so I did replace the alternator and the belt and it's still drains the battery something is draining the battery power it won't shift when I do have a battery in its full it does strange things like that if I have a full battery it will just drain within 2 starts

[aleekat]

How old is your battery? Have a load test done on your battery. Most autoparts stores do it for free.

[Stealthee]

A battery with a dead cell will show full voltage, but not act like it has full voltage. I had a battery that needed jumped to start the car, the car would drive excellent with no electrical issues no matter where I needed to go, but as soon as I shut the car off the battery needed jumped again.

[Andrizzi_d]

I already checked that to and the car literally dies while driving. When I pull over and try to put it in park I can't unless I have power going to the battery or put my key in the slot near the shifter so I can .

[Stealthee]

It still sounds like your alternator isn't charging. You have to do some proper diagnosis instead of throwing things at the wall and seeing if they stick.