Question about 1989 Audi 200

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My 1989 audi 2.5 turbo auto won`t start. There are no lights on the dash when i turn the key. The oil pressure guage shoots up to max and there is a faint `squeal` from one of the warning buzzers. When I swing the key over to start there is zilch happening. I have taken the batt out and charged it up. It registers 12.6v on my voltmeter now. It starts almost immeadiately if i jump start from a donor car but only if the donor car is revving above idle. The Audi drives fine after the jump start with all functions operating and the voltmeter registering 13+volts. If I drive around to charge up the battery and then switch off - it is completely dead. Any ideas please? Thanks.

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Sounds like your battery is tired and isn't holding charge as deeply as it did. As batteries get older they don't charge as deep into plates. Your reading of 12.6 is just surface reading. Have local parts store load test it -- they do it for free

Posted on Jan 03, 2011

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