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Re: Voltage Regulator 200 91

posted by  someone claiming to be L K Tucker on  Thu Apr 26 06:30 CST 2001 [RELATED]

/// There are posts in FAQ's (for repair shops that keep web sites) that the brushes wearing out or failing to advance with wear can cause the light to be out when it should be on. I found this listed as a "Volvo tip" in a recent web search.

In other words the voltage regulator fails but because the brushes are not in touch with the slip rings the light does not come on. If the brushes slip forward with normal engine vibration the light would then come on until brush wear again broke the light circuit.

I don't know about you particular problem but since I read your post I wanted to give you this information.

It is possible for the alternator to act as a magnetic brake and disrupt engine idle. This particular situation might well cause that rough idle. Normally the alternator is on or off. Having it switch in/out because of a circuit fault would load and unload the engine.





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