Which models have the fuel pump in the tank

your car does not, only 2004+ do.

This page was pretty helpful in explaining it to me.

http://www.myturbodiesel.com/1000q/pumpedusedesc.htm

That's right. In your car, the injection pump on the engine sucks fuel from the fuel tank.

2004+ cars use a fuel pump in the fuel tank to move fuel to the fuel filter. Look through the FAQ called 1000 answered questions and you can learn a lot in an organized way.

Cool, thanx. Where are the FAQ?

The FAQ (1000 answered questions) are at the top of the general forum

Each sub forum also has a model specific FAQ at the top.

If it does, it doesn't need maintenance.

You should note that the PD lift pump has a "sock", but it doens't really filter anything, the screen holes are so big that contaminants go to the fuel filter.