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Thread: Disco 300tdi Alternator Drawing power when sitting

  1. 28th January 2008, 03:21 PM #1
    stephen
    stephen is offline Fossicker
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    Disco 300tdi Alternator Drawing power when sitting

    As the title says my alternator is drawing 3.76 amps (at least I think I am reading the multimeter correct) when the car is turned off. It will flatten the battery in 2 days if it is just sitting. The alternator has done only about 5000kms at best and less than 12 months old, Bought new from Graeme Coopers. Before I take it back is there anything obvious that might be the cause? Other than bolting it in, I put the taco module on the alternator and that is it. The tacko works perfect. The Alternator makes a humming sound when it's sitting and has done so for a long time I just could not work out where the sound was coming from, It would have being doing this from new. My wife is sick of flat batteries so if anyone has any ideas please post them up?

    Thanks
    Stephen
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  2. 28th January 2008, 03:52 PM #2
    procrastination inc
    procrastination inc is offline Master
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    sounds to me like the rectifier in the alternator is caca.
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  3. 28th January 2008, 04:50 PM #3
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    justinc
    justinc is offline Swaggie Vendor
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    Quote Originally Posted by procrastination inc View Post
    sounds to me like the rectifier in the alternator is caca.
    Yup, rectifier has an earth leakage. Send it back and there should be a warranty if less than 12 months old. I have had 1 do this after 3 months, and there was no reason for it to go, it may even have been faulty when manufactured...

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
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  4. 30th January 2008, 05:06 PM #4
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    sclarke
    sclarke is offline TopicToaster
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    Diode in the Rectumfryer has gone Short...
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