Reprogram PCM if vehicle hesitates after being parked for twenty minutes: Mercury Cougar Muffler & Exhaust

Problem overview

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.

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Mercury Cougar vehicles with this problem

2 model years affected

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

Problem overview

Mercury Cougar vehicles with this problem

Need a diagnosis? Trust our Mercury experts.

Search for another problem

Ask our experts about your Mercury.