Alternator charging at 10volts!
Thread Starter
Burning Brakes
Joined: Jul 2003
Posts: 922
Likes: 1
From: Brisbane Queensland, Australia
Alternator charging at 10volts!
Latest with my vette; had alternator tested yesterday-hadn't been showing up dash as charging much above 10volts! Alternator checks out OK tho! DAMN; any thoughts?
Battery is new, cables are fine, belt tension is fine, fuses etc are ok... :rant:
Battery is new, cables are fine, belt tension is fine, fuses etc are ok... :rant:
Drifting
Joined: Oct 2003
Posts: 1,594
Likes: 0
From: CALGARY ab
Re: Alternator charging at 10volts! (smacko)
Latest with my vette; had alternator tested yesterday-hadn't been showing up dash as charging much above 10volts! Alternator checks out OK tho! DAMN; any thoughts?
Battery is new, cables are fine, belt tension is fine, fuses etc are ok... :rant:
Battery is new, cables are fine, belt tension is fine, fuses etc are ok... :rant:
Team Owner
Joined: Jan 2003
Posts: 20,335
Likes: 264
From: Summerland B.C. Canada
Re: Alternator charging at 10volts! (smacko)
How can you say alternator checks out OK if you only see 10 volts. That is probably the voltage left in your battery. Tell me more :smash:
Drifting
Joined: Oct 2003
Posts: 1,594
Likes: 0
From: CALGARY ab
Re: Alternator charging at 10volts! (AGENT 86)
How can you say alternator checks out OK if you only see 10 volts. That is probably the voltage left in your battery. Tell me more :smash:
Thread Starter
Burning Brakes
Joined: Jul 2003
Posts: 922
Likes: 1
From: Brisbane Queensland, Australia
Re: Alternator charging at 10volts! (korvette4u)
OK guys, what I SHOULD have said was alternator charges at 13.8v.
BUT the dash display SAYS it's charging at 9-10volts...
Alt is 1 year old
BUT the dash display SAYS it's charging at 9-10volts...
Alt is 1 year old
Team Owner
Joined: Jan 2003
Posts: 20,335
Likes: 264
From: Summerland B.C. Canada
Re: Alternator charging at 10volts! (smacko)
The gauge usually shows a little less than actual output but not that much :eek:
I think your gauge may need a smacko across it's face. :D
If your getting 13.8 at the battery I would say everything is fine with your alternator.
:cheers:
I think your gauge may need a smacko across it's face. :D
If your getting 13.8 at the battery I would say everything is fine with your alternator.
:cheers:
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Re: Alternator charging at 10volts! (AGENT 86)
:iagree:
I just rebuilt my alternator yesterday on my 86. The dash guage always showed .3volts less than the actual voltmeter reading taken at the alternator.
[Modified by 86PACER, 7:32 AM 12/3/2003]
[Modified by 86PACER, 7:33 AM 12/3/2003]
I just rebuilt my alternator yesterday on my 86. The dash guage always showed .3volts less than the actual voltmeter reading taken at the alternator.
[Modified by 86PACER, 7:32 AM 12/3/2003]
[Modified by 86PACER, 7:33 AM 12/3/2003]
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Re: Alternator charging at 10volts! (smacko)
OK guys, what I SHOULD have said was alternator charges at 13.8v.
BUT the dash display SAYS it's charging at 9-10volts...
Alt is 1 year old
BUT the dash display SAYS it's charging at 9-10volts...
Alt is 1 year old
I would also measure the voltage at the BATTERY with a voltmeter while the engine is running also, if you have not already done so. The voltage at the battery should be really close to if not the same as at the alternator with the engine running, using a voltmeter. If this turns out to be the case it sounds like your alternator is good and your dash guage is inaccurate for whatever reason that may be. :auto:
[Modified by 86PACER, 7:28 AM 12/3/2003]
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Thread Starter
Burning Brakes
Joined: Jul 2003
Posts: 922
Likes: 1
From: Brisbane Queensland, Australia
Re: Alternator charging at 10volts! (86PACER)
:iagree:
I just rebuilt my alternator yesterday on my 86. The dash guage always showed .3volts less than the actual voltmeter reading taken at the alternator.
I just rebuilt my alternator yesterday on my 86. The dash guage always showed .3volts less than the actual voltmeter reading taken at the alternator.
Team Owner
Joined: Mar 2000
Posts: 83,384
Likes: 88
From: Boston, MA
Either your battery is fried or you have blown a 12-gauge fusible link that is found below/behind the battery connecting to the junction box. If that link goes then you will get no charge on the gauge or going into the battery itself.
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Re: Alternator charging at 10volts! (smacko)
:iagree:
I just rebuilt my alternator yesterday on my 86. The dash guage always showed .3volts less than the actual voltmeter reading taken at the alternator.
0.3v I could live with, THREE is pushing the boundaries tho! :confused:
I just rebuilt my alternator yesterday on my 86. The dash guage always showed .3volts less than the actual voltmeter reading taken at the alternator.
0.3v I could live with, THREE is pushing the boundaries tho! :confused:
You are right, 3 volts difference is not right. :thumbs: But 0.3 or .3 is normal.
