Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
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check the voltage at the batter without the engine running.
then check it at the battery with the engine running.
should be a significant rise in voltage on the 2nd test, should be 12V on the first and 14-15v on the second.
if the 2nd test doesnt show a change then the alternator is likely to be at fault, if there is a rise but the car still has a charging problem then its likely the battery is at fault as it isnt holding charge.
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