SPOILER WARNING:
In Fallout 3, yes, your father does die. He is confronted by the Enclave at Project Purity and they are going to take control of it. To stop them, your father releases a lethal amout of radiation into the area, killing the Eclave soldiers in there, but also sacrificing himself in the process.
Your characters Dad, James isn't in greyditch.
No you do not die. If you play fallout 2 it tells you the vault dwellers fate.
in the citadel but you can only get in after completing the quest with your dad
To start up "project purity"--- To cleanse all the water---
SPOILER: no he is in vault 112 in smith Casey garage
No, his dad did not die. His parents got a divorce.
Your Dad kills himself taking down an Enclave officer, stopping the officer from getting valuable information about Project Purity
dad die? die!? no
It depends on your definition of the word respawn. When you die in Fallout 3, your game will load your last save.
I am pretty sure that your dad ticks the overseer off so he turns him into a dog to keep his mouth shut
It is a quest added after finding dad or Docter Li.
Yes, if you follow the main storyline you will finally meet him in vault 112.