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2002 Holden Commodore BATTERY LIGHT IS ON

Tiny
VX2002
  • MEMBER
  • 2002 HOLDEN COMMODORE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 12,900 MILES
I REPLACED ALTERNATOR 15,000 km AGO BUT NOW HAVE BATTERY LIGHT ON. IT SHOULDN'T BE ALTERNATOR AS IT HAS DONE NEXT TO NO WORK. I TRIED A NEW REGULATOR BUT IT DID NOTHING WHAT ELSE COULD IT BE
Friday, July 10th, 2009 AT 9:11 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

It is a mistake to presume anything with motor cars, check the alternator out put first, report back your findings.

Mark (mhpautos)
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Saturday, July 11th, 2009 AT 5:23 AM
Tiny
VX2002
  • MEMBER
  • 2 POSTS
I tested the battery it is showing 11.5 volts with the engine off. With the engine running there are 12.8 volts. I also checked at the back of the alternator it produced the same readings.
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Monday, July 13th, 2009 AT 12:55 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

The alternator out put is way to low for that battery charge, I would be having it inspected by a auto elect, and get the battery load tested as well,

mark (mhpautos)
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Monday, July 13th, 2009 AT 1:06 AM

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