Sounds like the Idle Speed Control (IAC Motor) isn't functioning properly.
Try disconnecting the battery for at least 5 minutes and then restart the car.
This will reset your computer, and it may clear the problem.
If the problem returns, then you may need a new IAC Motor.


Pete...

98.5 SE Sport Duratec ATX (P66L)
Black Clearcoat on Greystone
DOB 11/21/1997
DOP 12/25/1997
PIAA 510 Super White Driving Lights
SVT CAT-BACK EXHAUST (No Resonator)
DiabloSport Chip (LPQ4) - Engineered To Raise Hell
Too many other mods to list...
Sounds sweet, runs quick...
Crazy Horse Dyno @ 121.4 WHP/129.6 TQ