Look for a vacuum blockage or a vacuum leak.
Idle Air Control Valve.
PO 1507 is Idle Air Control System Underspeed
there is an idle control on these cars, could also be a problem with your intake, and idle. that's what was wrong with my 2000 focus. i lowered the idle, and changed the air filter.
most 2000 model year focus have a fuel delivery module recall.
A bad IAC (Idle air control valve) or a vacuum leak or both.
ford focus stalling at idle but not cutting off the check engine light is on please help so i dont get rip off thanks
Check your vacuum hose.
i have a 2000 dodge work van 318 engine when i start in the morning it stalls several times until it warms up then ok
AnswerBehind and Below the Carburetor there is a Set Screw that you turn in which raises the Throttle cable Bracket. Similar to this imagehttp://www.danhardison.com/focus/sc/DSC03878.JPG
throttle body or idle air control value
vaccum leak
There is no idle screw. The idle air control valve controls the idle and can be set on different settings. You should consult a Ford dealer or mechanic for proper settings.