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Reprogram PCM if vehicle hesitates after being parked for twenty minutes on Mercury Cougar

Problem Description and Possible Solution

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.


Problem Data
RepairPal Verified
Average mileage: (–)
Exhaust & Emissions affected: 2.0L 4 Cylinder
2 model years affected: 1999, 2000
2 people reported this problem