Fuel Pump needs to be replaced?

[n00b]

Okay so i was driving my 1990 240sx for the first time in months (finally got the clutch replaced).. As I'm driving it, all of a sudden i feel the car bogging and the RPMs drop down and it felt as if it was engine braking.. I thought maybe the needle on the gas meter was broken so I went to get gas.. Turns out that wasn't it.. After that I turn the key and it cranks but won't start.. I tried jumping it and it actually started but drove it for about 5 minutes and the same thing happened except this time the RPMs dropped down much more and the car was unable to move at all and I eventually just stalled... Could this be the fuel pump? Or what else could it be and what steps should I take to find the problem? I just dropped close to 5 bills on the clutch, i don't know if i have a lot of money to fix this next problem so i don't want to take it to tha shop until i have a good idea what it is..

Thanks in advance.

[Duzzes_Wild]

fuel filter, it was sitting for months, sediment collected in the tank and clogged your fuel filter when it was stirred up by driving

[s13speeddrft]

sediments in the tank getting kicked up and into the fuel filter is a myth.... maybe for gas back when it was processed differently.

[drftwerks]

is your fuel pump bieng commanded on??

can you hear it turning on??