why does my engine somtimes race? on 1998 Ford Escort

somtimes my engine will start to race after it has warmed up.It has done this twice in the last couple of weeks.I tried stepping onthe gas pedal but that did not stop it so I turned off the engine and started it back up and it idle normally.

by in Decatur, GA on January 04, 2013
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1 answer 3 comments
ANSWER by , January 05, 2013
What engine?
COMMENT by , January 05, 2013
COMMENT by , January 05, 2013
Light on? Sounds like an idle air control problem, pcv system on this motor gives some trouble also.
COMMENT by , January 05, 2013
no the light is not on