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Old 01-15-2006, 12:31   #1 (permalink)
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Location: Canberra ACT
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Alt. light on/off

I have a series 1 AU and for some time now ( like about 18 months! ) the altenator light on the dash comes on.

It does not come on when you first start the engine or when you have stopped the engine then re start and it does not stay on all the time.

I have not looked into it too much as it has not caused me any drama's but I was wondering if anyone esle has had this problem or if it is a common glitch.

If the alternator has a fault like worn brushes I would expect the warning light to stay on or the battery to eventually go flat.

I don't normally drive this car my wife does but after doing a couple of thousand K's in it over the xmas break it is annoying me.

It has about 175K on the clock.

Thanks Mark
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Old 01-16-2006, 01:57   #2 (permalink)
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Re: Alt. light on/off

Unless there are some loose connections on the alternator, this is usually a good sign that the regulator is on its way out. The regulator and brushes come as a easily replaceable module on the alternator.
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Old 01-18-2006, 22:32   #3 (permalink)
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Re: Alt. light on/off

yep i can gaurantee it is the regulator
my EA did Exactly the same thing not long ago
the brushes were still good but the regulator shagged
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Previous Rides:
1989 EA Falcon GL 4.0 LPG 5spd (ex 3spd auto)
1990 EA Fairmont Ghia 3.9 MPI 4spd Auto
1989 EA Falcon S 3.9 MPI 5spd

Current Rides
1989 EA Falcon S 3.9 MPI 5 spd
1990 EA Fairmont Ghia 3.9 MPI No Speed (soon to be manual)

And Still not sick of them yet
Havnt Blown a head gasket yet either
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