944 S2 Voltage

[red guards]

I have a 944 S2 which is running perfectly however the volt gauge has started to fluctuate. It used to stay mid way between 12 and 14 but has started to read 10 then creap up to the 12 mark. This variation between 10 and 12 occurs as you are driving along. The car is starting fine and all the electrics are working as they should. Is this a sign that the battery or altenator are on their way out? Is this a common fault?

Any ideas...???!!!

[basil brush]

I'd check what's actually happening with a volt meter on the battery. My old S had a fairly inaccurate gauge.

[sweetea]

red guards said:

I have a 944 S2 which is running perfectly however the volt gauge has started to fluctuate. It used to stay mid way between 12 and 14 but has started to read 10 then creap up to the 12 mark. This variation between 10 and 12 occurs as you are driving along. The car is starting fine and all the electrics are working as they should. Is this a sign that the battery or altenator are on their way out? Is this a common fault? Any ideas...???!!!

Hi,

Test the specific gravity of the battery and also the voltage across the terminals when connected and disconnected. You could have a poor earth (casued by corrosion).

Regards,
Andrew
ProMAX Motorsport

>> Edited by sweetea on Tuesday 15th November 16:56