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Car Batteries
Mercury Sable

Why would the battery light flicker on a 95 Sable when the tach is up to 3k and engine not fully warmed up?

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2004-10-23 10:25:20
2004-10-23 10:25:20

Clean the battery cables and make sure the wires to the alternator are tight and without corrosion.

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The warning light doesn't tell you how healthy the battery is, it tells you if there are any problems with the charging system. A flickering light means charging is intermittant for some reason, so it would be worth checking the alternator or voltage regulator, which might be on the way out. It's worth also checking that the warning light circuit and bulb are ok - if it lights up brightly and continuously when you switch the ignition on, then goes off when you start the engine, it's ok. Hope that helps.

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If your alternator is good it should stay running until your engine dies from no fuel.


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