Question about 1998 BMW 5 Series

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My 318i continues to drain my battery have changed out 3 times works for approx. 1 week with no problems and drains battery this just began occurring any advice

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Remove negative cable. hook up ammeter between lead and battery. if you have reading of amp flow. disconnect altenator lead. if you have not tried this I would recommend a try. may be a back flow in a trainsistor when it should be blocing reverse flow. GM had this at points in time. the built in regulator would fail. would not stop back flow. The altenator would in essence try to be a motor

Posted on Oct 14, 2010


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