|
I was reading the voltage directly across the battery terminals, with a digital voltmeter.
12.8v without the engine running.
14.4v immediately after starting the engine.
The voltage then gradually drops over a period of about 5 minutes to 14.1v
Adding loads like the lights or rear demister also pulls the voltage down but only very slightly.
I came across this issue on the 996 on the web, but I'm battling to find the page again.
PS Check the voltage on my Touareg to compare and it stayed perfectly on 13.8v under all conditions.
Hey, I've just figured it out, put the Treg alternator in the Boxster, hehe! It's 200A if I can remember correctly.
|