BATTERY LIGHT AND ELECTRICAL LIGHT CAME ON AND ...

2003 Cadillac CTS

Tiny

bbbrow2

February, 26, 2013 AT 3:04 AM

Battery light and electrical light came on and said "no charge" then lights got dim and gas pedal stopped working and car died. I jumped it and it ran for a few mins but no interior lights worked nor did the gas pedal. Took battery off and it is fine. What is wrong. Alternator?

FOUND 2975 RELATED QUESTIONS

1 Answer

Tiny

caradiodoc

February, 26, 2013 AT 3:47 AM

Yup. The generator is not recharging the battery while you're driving or it has a bad diode. You can verify that with an inexpensive digital voltmeter. Measure the battery voltage with the engine running and while the problem is occurring. It must be between 13.75 and 14.75 volts. If it is low, around 12.6 volts, suspect the generator.

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