A New fix for Alternators on 900's

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waycoolstuff! - 03 Jul 2004 18:26 GMT

Before freaking out, the alternator might be okay and it could just be the
voltage regulator, this is connected to the front of the alternator via two
screws and is easily removed without taking out the alternator. Once removed
you can measure the length of the regulator poles (5cm is minimum)and
determine if the regulator needs replacing. Next, go to an auto parts supply
store and buy the Bosch equivalent. Mine was under 30$cdn and the labour
saved by not removing the alternator was enormous. Hopes this helps.

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Bob - 03 Jul 2004 18:53 GMT

>Before freaking out, the alternator might be okay and it could just be the
>voltage regulator, this is connected to the front of the alternator via two
[quoted text clipped - 3 lines]
>store and buy the Bosch equivalent. Mine was under 30$cdn and the labour
>saved by not removing the alternator was enormous. Hopes this helps.

What year(s)?

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waycoolstuff! - 04 Jul 2004 00:40 GMT

I've done this on 89 and 91 900's. should work theoretically on 87-93 ie
classic 900 models. Even the voltage differences between 89 and 91alternator
did not affect the replacement regulator. ie: voltage regulator from 89 can
be used on a 91 even though 91 engine is larger and alternator is of a
higher voltage. Anyone else confirm??

> >Before freaking out, the alternator might be okay and it could just be the
> >voltage regulator, this is connected to the front of the alternator via two
[quoted text clipped - 5 lines]
>
> What year(s)?

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James Sweet - 29 Jul 2004 05:20 GMT

> I've done this on 89 and 91 900's. should work theoretically on 87-93 ie
> classic 900 models. Even the voltage differences between 89 and 91alternator
> did not affect the replacement regulator. ie: voltage regulator from 89 can
> be used on a 91 even though 91 engine is larger and alternator is of a
> higher voltage. Anyone else confirm??

Higher voltage? I doubt it, more likely higher amperage, which yes, does not
effect the regulator required. I believe this is the same Bosch regulator
used in Volvos from the early 80's up until at least the early 90's in
alternators ranging from 55-100 Amps.

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T - 29 Jul 2004 09:43 GMT

> Before freaking out, the alternator might be okay and it could just be the
> voltage regulator, this is connected to the front of the alternator via two
[quoted text clipped - 3 lines]
> store and buy the Bosch equivalent. Mine was under 30$cdn and the labour
> saved by not removing the alternator was enormous. Hopes this helps.

As these cars use OEM parts from the same parts bins as other Euro
cars I can confirm this is very true.

(Bosch is Bosch is Bosch, etc)

I'd add that augmenting your chassis' electrical grounds and cleaning
metal to metal contact to enable better electron flow will often
breath life back into poorly charging, dim head lighting, faulty
marginal running cars.

TBerk

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