27-12-2012, 04:34 PM
hi can any1 help me with my problem i have a hdi and battery light has jut came on and when parked up the revs are droppin off slightly would it be a alternator or battery any help will be much appreciated
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battery light
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Posts: 19,854
Threads: 581 Joined: Dec 2011 Reputation: 195 Location: Bournemouth Car Model/Spec: Supercharged 306 GTi6 
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27-12-2012, 04:37 PM
More than likely alternator. Got a multimeter? If so, battery voltage should be about 11.8-12v when the cars off and about 14.4v when the car is running. Any less than 14 and i would say new alternator time. Also check the voltage at the alternator whilst its running. If that is about 14.4, youve got damaged wiring somewhere if its reading less at the battery.
Team Eaton
1999 China Blue 306 GTi6 - Eaton Supercharged - 214.5bhp 181lbft |
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