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Peugeot 406 Alternator - Amarok1964
I have a "battery charge fault " message on my display and a whining noice from my alternatoer. does this mean the death of my alternator which means renewing, your comments please of wise ones,

Tags: technical issues batteries unexplained noises electrical faults

Peugeot 406 Alternator - Amarok1964
By the way its a 2000 "W" 2.0 HDi Estate with 96,000 mls on the clock
Peugeot 406 Alternator - bell boy
get a free alternator check at any half decent garage or even a trade alternator place before you "splash the cash" (even halfords might do a free check?)
Looking at my screen it looks like you are only getting 14.5 volts at 3000 revs but my amd chip may be lying ;)
Peugeot 406 Alternator - Hugo {P}
You can get it tested at a lucas centre. I don't know what they charge.

Your thread has been moved over here as it will generate more responses in this forum.
Peugeot 406 Alternator - robcars
You could do with a ohmmeter reading from the alternator but a voltage reading will suffice for now.

Post back if you got either with any readings you get.
Peugeot 406 Alternator - 659FBE
You can't check an alternator functionally with an ohmmeter without dismantling it as the phase windings effectively bridge the diode pairs, masking the effect of an open circuit diode.

A voltage check is useful, but if you have a whining noise which is non-mechanical in origin, this generally indicates a diode fault. The machine becomes magnetically noisy with a faulty diode bechause the phases are no longer balanced. The diodes can indeed be checked with an ohmmeter, but you must disconnect the stator first.

I have seen a few Valeo machines of this vintage with faulty stators - the windings come out of the slots, are hit by the rotor and then break and/or are grounded. This will be obvious if you dismantle the machine - remember that Valeo stators are not self-centering. This fault also gives magnetic noise due to phase imbalance.

Peugeot 406 Alternator - Galaxy
Your thread has been moved over here as it will generate
more responses in this forum.

Peugeot 406 Alternator - Pugugly {P}
I don't know what they charge. - The Battery !
Peugeot 406 Alternator - MW
Sounds like a duff alternator, but do go to a good auto-electrician. I have found they know 10 times as much about car electrics as any garage. Alternators in particular are their bread and butter.

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