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Old 01-29-2013, 02:17 PM
Usy2007 Usy2007 is offline
Registered User
Location: United kingdom
Join Date: Jan 2013
Posts: 20
Mein Auto: Bmw 318i msport convert
Guys just a quick one.. When the car is running at idle the voltage on the battery is 13.8v.. However when i rev the car to 2000-3000rpm it doesnt go above 13.9v.. I read up on a couple of sites that it should be a minimum of 14.2v when revving abd this could indicate a weak alternator or a faulty diode? Can anyone confirm this?
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