Ford F-250 MAP Sensor

I Had A Cold Start Idle Problem, I Replaced The Map Sensor. It Solved The Problem For 2 Days, Now The Rough Idle Is Back.

What Would Cause A Map Sensor To Go Bad? I Put A New One In On Nov. 20 And Before That Probably Three Months Prior

Truck Was Fine One Day Then All Of A Sudden It Would Die Down When You Gave It Gas. In Neutral It Revs Up Fine But Not When In Gear. I...