2000 gt stalling

I have a 2000 gt that will start without problem but it will stall when placed in gear
Will always restart but sometimes it will have a very strong surge. Also on roads with elevation changes when vehicle goes over a bump or a drop in the road the car will cut out. any suggestions thank you
 
I agree.... i replaced my fuel pump a couple months ago because of this reason. if you do look into getting a new pump....rather than swapping out your old one for a refurbished or new OEM replacement, look into buying the SVT focus fuel pump. you will have to take the float and a couple other things off of the old pump to put on the new pump, but it is a ton cheaper and will boost the lph's!!!