If the vehicle hesitates or idles roughly after being parked for twenty to thirty minutes, with the engine still warmed to normal operating temperature, you may need to reprogram the PCM (powertrain control module) with new calibration.
Car Problem Reports
Ford Contour Reprogram PCM if vehicle hesitates after being parked for twenty minutes
Ford Contour Problem
Exhaust & Emissions Affected: 2.0L 4 Cylinder