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6 cyl, replace alternator and battery and still.

Tiny
ORVILLE
  • MEMBER
  • 2002 MITSUBISHI GALANT
  • 73,456 MILES
6 cyl, replace alternator and battery and still having power drain issues. Checked with volt meter and alternator works fine but then the engine idle changes slightly after 10-15 and suddenly power drains drops about 2 volts and battery.
Thursday, May 10th, 2012 AT 5:29 AM

7 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So does the battery go dead while its running or while its shut off?
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Thursday, May 10th, 2012 AT 6:46 AM
Tiny
ORVILLE
  • MEMBER
  • 4 POSTS
Whike its driving.
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Thursday, May 10th, 2012 AT 2:40 PM
Tiny
ORVILLE
  • MEMBER
  • 4 POSTS
While its driving. I used a volt meter on the new battery and it read 12.5 volts. I turned the car on and it jumped up to 13.9 to 14 volts. When the idle changed after 15 min with the volt meter still attached the power dropped to about 12 volts and the battery and oil light on the dash turned on. Then the idle changes back and the volts start climbing again. Now I'm afraid to drive it because when I do drive it and the idle changes the power will go down to 10 volts and all the Gage's start going haywire. The car will hesitate then die. I put in the. New alternator and new battery two days ago, so both are working perfectly. While its parked and running is when the drain happens. I haven't really driven it since I installed the alternator and battery, I just let it run while it's parked until I figure out what causing the Volts to drop
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Thursday, May 10th, 2012 AT 2:53 PM
Tiny
SATURNTECH9
  • MECHANIC
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So the new alternator does the sane thing as the old one?
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Thursday, May 10th, 2012 AT 3:04 PM
Tiny
ORVILLE
  • MEMBER
  • 4 POSTS
Yes
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Thursday, May 10th, 2012 AT 3:44 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I would start by verify powers and grounds at the battery and then look at the connectors at the alternator.

Roy
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Friday, May 11th, 2012 AT 12:06 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I would do that when the charge voltage goes down bellow normal. It might just be a loose wire somewhere.
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Friday, May 11th, 2012 AT 4:36 AM

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