01 Focus SE Wagon Problem

[thewoahna]

OK, Here is the story on my 2001 Focus SE Wagon with 135k

A few days ago my wife and I were in the car with our son on the way home from Chipotle (Mmmmmm....) and when we went to take off from a stop, I had the gas pedal down like normal but the car was acting like the gas pedal was rapidly being pushed in and out making for a real herkey-jerkey take off. Once the car was up to speed it ran better. I took it to the shop and explained to thm what was happening, and they said that it could possibly be the idle sensor. They replaced the idle sensor and cleaned the throttle body. They they stated that it should be "good to go". On my 40 min drive home, it ran good for the first 35 min, but then when I stopped at a stop sign and went to take off, the car stalled out and died. I tried to get the car stated for about 10 min with no success. There would be a couple times that it would start, but the engine light would be on, and engine sputtered very badly. I would then go to put it into gear and it would stall.

I am thinking that it has something to do with the fuel pump but I am not sure. What do you all think? I hate to put too much more money into this car with as many miles as it has on it. But then again, my wife loves the car and wants it fixed... Please help!