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Old 06-30-2016, 11:35 AM   #1
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Default Battery light comes on.

When my engine is under a load(going up a small hill) the battery light comes on until the engine is not under a load. I've checked both the battery and the alternator and they are good. I've tried putting the engine under a load in my driveway up to 2500 rpm but the light didn't come on.
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Old 06-30-2016, 01:56 PM   #2
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You should get a full charging system test. It'* likely there could be something wrong with it, and load is pulling it below threshold enough to trip the light.
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Old 06-30-2016, 05:30 PM   #3
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Quote:
Originally Posted by Quin View Post
When my engine is under a load(going up a small hill) the battery light comes on until the engine is not under a load.
"not under a load" as in coasting down the other side of the hill or as in still under a little load on level road?

When safety allows: Can you try causing this behavior again, then let off the gas gradually while still going up the hill and note what speed the light goes out?

Quote:
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I've checked both the battery and the alternator and they are good.
Checked with a load tester or a volt meter?

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I've tried putting the engine under a load in my driveway up to 2500 rpm but the light didn't come on.
What RPM is your engine at when going up a small hill then the light does light up?

I'm thinking maybe the regulator could be going bad in the alternator but doesn't show itself until xRPM . . . ?
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Old 06-30-2016, 09:38 PM   #4
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I take it, you don't have a voltage gage?

Attach a voltmeter to your battery, and lay it under a wiper blade as you drive.....note the voltage when the light comes on....
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