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1995 Chevy Lumina alternator is being grounded out

Tiny
SARA27
  • MEMBER
  • 1995 CHEVROLET LUMINA
Electrical problem
1995 Chevy Lumina 6 cyl Two Wheel Drive Automatic

changed alternator but car is still running off of battery. Changed battery, all fuses underhood, alternator belt, tensioner, tested the red wire to alternator is getting right volts. But Alternator Is being grounded out some how. I'm not sure what else to check?
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Wednesday, June 24th, 2009 AT 7:53 AM

4 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Check two fuses one in engine compartment box the BMIS 15A and in box in cab fuse # 39.
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Wednesday, June 24th, 2009 AT 2:43 PM
Tiny
SARA27
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Checked fuses all were in good condition but changed anyway and still the aternator is being grounded out.
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Monday, June 29th, 2009 AT 10:03 AM
Tiny
DOCFIXIT
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Use a volt meter battery voltage engine off? Engine running voltage on B+ large red wire and vlotage on small red wire at terminal connector? Is charge light on with key on before you start and does it go out?
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Monday, June 29th, 2009 AT 10:17 AM
Tiny
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The auto zoner wasnt helpful with the answers to ur questions. He said that the battery was very weak when engine was off and thought it wouldnt crank but it did. Stated that alternator isnt charging at all. There was no charging light on when key was on before starting car.
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Monday, June 29th, 2009 AT 11:23 AM

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