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Low Volts And Battery Light

Bogle45

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Bogle45 Enthusiast

Bogle45

Posted
Posted

About a week ago my battery light came on in my 2000 Silverado, I decided to let it run for awhile... hoping it would charge the battery back up. But instead of it getting better, it got worse. The volts dropped from about 11 or 12 to 9 and then the gauges even stopped working... no rpms, no fuel, no temperature. The only gauge that worked was the oil pressure. To fix the problem I put a new battery in it.

 

As I was driving home last night the battery light came on again and the volts were down to 11 or so. So I pulled in to Autozone because it was the closests, I was going to pull the alternator out so I could take it inside and get it tested. Turns out they can test it while still in the truck, they tested both the alternator and battery, both check out fine, at the same time the volts were still down at about 11... and were that way all the way home. I shut the truck off and went inside.

 

This morning I went out and started my truck up just fine and the volts were at 15.... what the heck is going on here?

Anyone else have this experience?

Cadha13 Enthusiast

Cadha13

Posted
Posted

Did you have any loose battery cables? The same thing happened to both of my parents cars where you read 10 volts say at the remote positive post while when you measure the voltage with the battery cables off right at the battery terminals it reads 14.8 volts. Loose or dirty contacts. The car will run with the battery like this, but when the engine is off weird stuff happens like what your describing.

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