Coiuld be TPS (Throttle Position Sensor) or a vacuum leak.
Check all hoses and tubing.
BTW, you are the only one with a 2001 'Tour.
My name is Richard. I was a Contouraholic.
NOW: '02 Mazda B3000 Dual Sport, Black
BEFORE: '99 Contour SE Sport
Duratec ATX Spruce Green
PIAA 510's, Foglight MOD, K&N Drop-in
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