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Author Topic: Alternator problems  (Read 3968 times)

Offline sKrEwBaLL

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Alternator problems
« on: 17 December 2003, 10:04 »
My battery is not charging, and both the battery and alternator have been replaced.  What else can it be...?

Cheers

PS its a mk2 digi, and then battery light is on very faintly at idle, and goes off when you rev it.
« Last Edit: 17 December 2003, 10:05 by sKrEwBaLL »
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Offline Rob

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Re:Alternator problems
« Reply #1 on: 17 December 2003, 10:08 »
sounds stupid really but is the belt tight. i thought mine was but, it was slipping, new belt. tightend and all ok
1990 8v
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Offline sKrEwBaLL

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Re:Alternator problems
« Reply #2 on: 17 December 2003, 10:10 »
It seems to be tight, I dont hear it slipping though.
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Offline Rob

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Re:Alternator problems
« Reply #3 on: 17 December 2003, 10:19 »
i had to clean up the battery connections, and replace the belt it never played up again.
is the idle to low
or is there a hefty stereo draining the power.

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Offline sKrEwBaLL

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Re:Alternator problems
« Reply #4 on: 17 December 2003, 10:26 »
It was all OK until a couple of days ago, and the battery went flat and I broke down.  Got the car home and bought a new battery.  Put that in, lasted about 4 hours and broke down again.  Replaced the alternator last night and charged up the battery, but when I started it up I can see the battery light is on faintly at idle as it was before when it kept going flat.  No hefty stereo.  I have not been using it while Ive got this problem.
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Offline Gambit

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Re:Alternator problems
« Reply #5 on: 17 December 2003, 10:31 »
test the alternator to see if its charging

haynes (or bentley) tells you how
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Offline Rob

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Re:Alternator problems
« Reply #6 on: 17 December 2003, 10:34 »
the only thing i would try now is the earth check.
check that the earth lead is clean and make sure it is metal to metal, a bad earth could cause these problems
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Offline sKrEwBaLL

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Re:Alternator problems
« Reply #7 on: 17 December 2003, 11:29 »
Thanks chaps.  Got it sorted.  It was actually a wiring problem.  Looks like the wires leading from the alternator to some sort of coil thing (?) had fried.  Taped them up and its OK now.
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Offline Gambit

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Re:Alternator problems
« Reply #8 on: 17 December 2003, 11:30 »
the coil pack thingy on the starter motor?
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Offline sKrEwBaLL

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Re:Alternator problems
« Reply #9 on: 17 December 2003, 11:35 »
Yeah that.  There was a split between the wires from the alternator to the coil pack and they were connected with a connector block and some tape.  Looks like over the years the wires became brittle and the connection got worse and worse.  It probably got to the stage where it started sparking and thats why it got burnt out.  Stripped it down and taped it up and it seems OK now.  I just wish I had spotted that before I bought the battery and alternator.  Plus, the AA guy had a good look around and told me it was DEFINATELY a dud alternator  :o
« Last Edit: 17 December 2003, 11:37 by sKrEwBaLL »
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