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.
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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.
659.
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Your thread has been moved over here as it will generate more responses in this forum.
Haaaaarrrrrrr!!!!!!!
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I don't know what they charge. - The Battery !
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