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Thread: Alternator help vr swap

  1. dubious311
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    Alternator help vr swap

    04-28-2012 02:16 PM #1
    Just replaced alternator and belt.
    Checked voltage at battery terminals and only getting 11Volts.
    CHecked wiring and noticed the blue excite wire was disconnected. Repaired wire and now the battery light comes on when the key is at on position and stays on when the engine is running.
    I'm still only getting 11 volts at battery terminals.
    Followed all the steps to test the alternator in the bently for a VR6 OBDII and everything checks out. Testing black wire to ground-12volts, checking the excite wire terminal to ground while key is on -12volts.

    Someone please help.
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  3. BiH
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    04-28-2012 02:37 PM #2
    if I remember right there is two terminals on the alternator where exciter wire goes, if you put it on the wrong one battery light will come on.
    My Mk2 jetta VR6 Wolfy build
    My MK4 jetta 1.8BT build (idle for now)
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  4. dubious311
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    04-28-2012 03:23 PM #3
    There's only one way you can plug in the connector to the alternator.

    Anyone else?
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  5. weejunGL
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    04-28-2012 03:27 PM #4
    defective voltage regulator?

    stock vw alternator wiring isn't very good. upgrate will only do you good

    heavy gauge wire will help out
    -==[Golf MKII G60 Syncro]==-
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  6. dubious311
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    04-30-2012 02:54 PM #5
    Anyone else have any info or ideas? I just replaced the alternator last April and it ran fine. Replaced the alternator again and I'm not getting a charge. HELP.
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  7. weejunGL
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    04-30-2012 03:20 PM #6
    for **** sake, didn't you read my post?

    i dont mean to be rude here or anything, but since you don't get any charge out of it. they answer lies two posts up......


    -==[Golf MKII G60 Syncro]==-
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  8. stealthmk1
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    04-30-2012 03:25 PM #7
    Check the alternator output directly at the output stud. It shouuld be at least 14v, if not then there's something wrong with it, plain and simple.
    Does voltage increase with revs?
    84 GTI 20vT build: http://forums.vwvortex.com/showthrea...-AEB-GTI-build
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  9. dubious311
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    04-30-2012 09:29 PM #8
    BUMP. Anyone else have any ideas??
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  10. stealthmk1
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    04-30-2012 09:36 PM #9
    Anything to report back on the suggestions you were given so far?
    84 GTI 20vT build: http://forums.vwvortex.com/showthrea...-AEB-GTI-build
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  11. gtidaddy
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    04-30-2012 10:18 PM #10
    put the coupe up for sale . buy a toyota.
    some feed back on suggestion might help others to help you
    A Dutty Dub
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  12. stealthmk1
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    05-01-2012 10:29 AM #11
    Quote Originally Posted by gtidaddy View Post
    some feed back on suggestion might help others to help you
    this
    84 GTI 20vT build: http://forums.vwvortex.com/showthrea...-AEB-GTI-build
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  13. dubious311
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    05-03-2012 09:10 PM #12
    Pulled alternator to get it bench tested tomorrow. See what happens, hopefully it's bad.
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  14. dubious311
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    05-04-2012 05:50 PM #13
    Alternator failed bench test replacement coming from German auto tomorrow.
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  15. finallygti1
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    05-08-2012 04:11 PM #14
    Good Luck
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