Question about 1998 BMW 3 Series

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I have a bmw 3 series and have been having trouble with the car not starting. it has had a new battery and last week a new alternator but now seems to be worse

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If the battery is ok and the alternator is ok u probably have a battery drain on the vehicle to test this u will have to put a mulimeter inline with the positive battery lead and check for amp draw. When checking this the ign needs to be switched off 0.05 amps is the most u should read if it's more than this pull out the fuses from the fuse box untill it drops this is how u find out what circuit the drain is on

Posted on Oct 04, 2010


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