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Hi, I have a 08 Corsa-D 1.2, upon starting the car i noticed that its a very weak ignition and the battery light is on instantly. I checked the voltage readings and when the car is off the battery is at 12.6v perfect. When the car is on with heaters and lights on, the reading drops to 11.3 and then bounces around 9.9-11.3. To me that means my alternator is gone. But the weak start gives me doubts about the battery. Anyone had any similar issues is it just my alternator is the battery also starting to fail.
Many thanks in advance.
Many thanks in advance.