Quote:
Originally Posted by Diesel911
If you are going to get a Voltage Regulator get the correct one for the Alternator you have.
The below works on the Stock Alternators.
If not, set your meter to Volts AC and you should have a reading of ~100mVAC.
If the VAC is too high, then look for a rectifying diode failure. If VAC is OK but the VDC is not correct, then the problem is with the voltage regulator.
If I accept the fact that on My W123 I need to have a Bulb (2 watts) in My Charging Warning Light circuit in order to charge correctly what would happen if I installed a Volt Meter in place of the Light?
I would check and see if the SAAB 9000 has a Charging Warning Light or a Volt Meter in it and try to duplicate that circuit.
I had an issue with a non-Mercedes Bosch Alternator and took it to PepBoys and when they checked it they gave me a little receipt sized print out; in My case on what failed on it.
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Great info there, thanks! So you're saying the VAC test would only work for the original Alternator, but that those figures may not be accurate for the Bosch AL129X I have in the car?
And I never thought of taking it somewhere to get tested. Maybe I could swap in my stock alternator for now and see if Pep Boys can tell me the component that is failing. Was that a free service for you?