Battery light flashing

[hyperkinesis]

Hi. My car 1984 911 targa some problems, the alternator was rebuild last week new regulator and diodes but the batery light flash few times 2-3 times when rpm are in 800-900 then turns off. This problem exist before the rebuild alternator. Any recomendation?... In adition in some rare ocations there a fluctuation on rpm from 600 to 1000 up and down, when i acelerate the car that problem is gone

[Jdub]

To start, I would be absolutely sure your battery is in top condition (replace or recharge if unsure) and the grounds are in good shape - battery ground strap as a start. Resistance often causes this light to flicker - I know after my alt. rebuild the car had to be taken onto the streets (not just idling) to "clear" the light.

Smarter minds than mine will have better ideas, but do be sure that battery is in excellent health (a bad battery is often a problem for alternators, etc.).

[hyperkinesis]

Thanks Im going to test dr bat. But like you said there are more experts out there I hope they can help