Question about 1987 Oldsmobile Cutlass Supreme

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I have a 72 olds cutlass supreme.  I had the generator, voltage regulator and battery changed all together last month.  I had replaced each component seperately in the last 4 years, once for the generator and 2 times for the voltage regulator and battery.  I am having the generator light come on dimly, unless I park and accelerate, and in that case it only goes of momentarily.  I have just cleaned and replaced the grounding bolt that attaches to the engine block.  The only causal factor for this reoccuing issue that I can come up with is that it may be occuring after I leave it sitting for a number of days.  Any ideas?

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The alternator may have a bad diode in the circuitry.. I think it 2 or three; and one bad one would give a charge but not fully functional... I would test it for this condition.

Posted on Jan 06, 2009

  • Glenn Snow Jan 06, 2009

    PS. If the light comes on only when the idle is extremely low, then that would be normal as the idle rpm should be minumum 500.

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Sounds to me like sticky brushes in the generator.

Posted on Jan 06, 2009

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