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BATT light remains on until revved - idiot lights don't light with IGN 'on' 200

posted by  gunga din on  Tue Nov 7 15:17 CST 2017
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This has got to be a textbook problem but I've searched a ton of threads and don't see my problem described exactly anywhere.

When I turn my ignition 'on' (but not to 'start'), I've read that I should see all my idiot lights illuminated, as this is a kind of 'test' position:

My batt light is the ONLY one that lights.




When I start the car, they should all turn off.

Istead, my batt light remains on, and will stay on, until the revs are increased to maybe 1500rpms approx., at which time the light goes off, and I almost swear I can hear a surge of power when it does. Almost as if the alternator was acting like an engine brake.

Anyone ever seen these symptoms?

Especially just the light staying on at idle.....and turning off after it's revved?

Thanks






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