i had the same problem on my 2000 se and it took the pump out and removed the sock on it and now it runs great.

2000 contour V6 ATX BAT suspension kit, k&n filter, SVT TB, SVT UIM, SVT LIM, MSDS headers, MSDS Y-pipe, SVT dual exhaust, Custum burned ADC chip, 7000k HID's, 200 amp HO alt, custom gauges, and 17" rims