2002 Focus dies after hard braking - I Need Help - A forum for when stuff goes wrong - General Information - Team Focus - Come On In And Enjoy The Company!
Could be a number of things, really. I'd start with a tune up, replace all the filters (including the fuel filter), plugs, wires. See how that does you. But really, without actually looking at the car, there are so many possibilities... but it really sounds to me like 1 of 3 things:
Clogged Idle Air Control (with 110k, a strong possibility)
Fuel Pump starting to go (common)
Possible DPFE failure (common, easy fix)