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MarkC posted a topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)First of all thanks to Ahsai for the post on the wire and inspection mirror in order to access the rear of the alternator. Same story as many others here, 14v at start up and as the car warms, drops to 13v (with nothing running). Dash volt meter drops to 12v with lights, a/c on, but actually measures 12.7v at jump start post and battery. I replaced the voltage regulator 9 months ago, appeared OK for 3-4 months. During the summer the problem re-occurred. I read many posts on other's problems. When the engine is warm, the voltage drop from the back of the alternator to the +ve post in th