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all dash lights are on off all the time
1999 Pontiac Sunfire

All dash lights are on off all the time

(1999 Pontiac Sunfire)
after changing the alternator the dash lights are on and off all the time
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Popular Answer
Check for poor ground at alternator, also check for clean and secure connections at the battery and alternator.
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General Diagnosis
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Check for poor ground at alternator, also check for clean and secure connections at the battery and alternator.
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I would suspect a badly rebuilt alternator, poor battery cable or ground connections or marginal connections at the alternator or fusable link.Make sure battery connections are clean tight and secure. At rest voltage across the battery should be 12.6 volts engine off or the battery must be charged, engine running the voltage across the battery should be 14.6 volts if the alternator is properly charging.
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