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Thread: Low Voltage
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11-21-2011, 04:03 AM #1Junior Member
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Onyx Black- 2002 Camaro SS
Low Voltage
I started my car this morning and the voltage gauge was laying right on the edge of the red. After I drove for about 20 minutes the meter went up to the halfway mark then it dropped back down to halfway between 13 and the red. My first thought was my alternator is going bad. My Optima battery is about 2 years old in it. Any thoughts?
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11-21-2011, 07:46 AM #2Veteran
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Red- 02 35th LE Camaro SS
I would first check to make sure that all your wiring is connected securely; at the battery and alternator. Make sure all the connections are clean and free of corrosion build up.
If that all checks OK, I would have both the battery checked and the alternator.
If you charge your battery with a charger and in a few days the battery is dead again, you either have a faulty cell in the battery or you have something draining the battery; bad fuse, power usage, etc.
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11-21-2011, 07:49 AM #3None Shall Pass
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Black- 99 WS.6 - Modified
Agree wih Jon.
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11-21-2011, 07:50 AM #4Spaz is My Mentor
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Navy Blue Metallic- 98 T/A w/ mods, 00 FBVert
make that +2 with Jon
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11-22-2011, 03:39 AM #5Senior Member
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1999 Formula WS6 M6-sold- 2001 Silverado Z71
Mine did the exact same thing last year before the alternator completely went out. A new alternator fixed my car.
Originally Posted by adamz02ss
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11-22-2011, 04:50 AM #6Junior Member
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Pewter- 1999 LS1 Transam
Im having a similar problem with my car. Any ideas on why my alternator willnot charge my battery? Ive been to three shops my back is against the wall, Ive replaced the car with a brand new computer, alternator, and battery yet my car will not charge!!! Any Ideas would be greatly appreciated
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11-22-2011, 05:03 AM #7O U 8 1 2
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[]D [] []V[] []D- 1999 trans am
check the battery terminals for corrosion... also check to make sure you're not leaking power steering fluid on the alternator (our cars are imfamous for that)... i've got bad batches of new alternators before...
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11-22-2011, 05:14 AM #8Junior Member
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Pewter- 1999 LS1 Transam
battery terminals are good .. Whats the power steering fluid on the alternator? Where is that located?
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11-22-2011, 05:16 AM #9Junior Member
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Pewter- 1999 LS1 Transam
will that cause the alternator to burn up?
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11-22-2011, 05:51 AM #10O U 8 1 2
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[]D [] []V[] []D- 1999 trans am
the power steering pump is located right above the alternator... the seal around the reservouir is notorious for leaking and dripping on the alternator... Originally Posted by Vettekiller24
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11-22-2011, 06:19 AM #11Junior Member
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Pewter- 1999 LS1 Transam
ok thanks checked it seal is good and nothing is on the alternator. Its like the pcm isnt sending a signal to the alternator. What will cause this its a brand new pcm. And what should the volts read between the pcm to the alternator ?
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11-23-2011, 09:06 AM #12Junior Member
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Onyx Black- 2002 Camaro SS
Turns out I had a bad alternator. Put one on yesterday and car is running great
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11-26-2011, 04:57 PM #13Electrical Engineer
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Custom Swirly Black- 2001 WS6 M6
Did you go with a re-manufactured one? If so, I hope you got a lifetime warranty with it. Originally Posted by adamz02ss
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11-28-2011, 04:55 AM #14Junior Member
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Pewter- 1999 LS1 Transam
ok I have fixed the PCM and the alternator. The red wire that goes to the alternator was actually broke inside the wire. Everyone who is having this problem check that damn red wire extremly well before taking it to the shop! Its about 30 dollar to fix. Thanks for all the help guys.
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11-30-2011, 04:19 AM #15Junior Member
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Onyx Black- 2002 Camaro SS
No I got a new one. No remanufactured parts on my SS!
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11-30-2011, 05:18 AM #16Electrical Engineer
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Custom Swirly Black- 2001 WS6 M6
Smart man! Originally Posted by adamz02ss:2723712
"Some people live for the rules..... I live for exceptions" N. Hexum
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08-08-2012, 03:22 PM #17infantryman
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white- 1999 trans am
i have a problem with it charges then it the meter goes way low then there is a click and it starts charging.. but then it randomly starts going down randomley.. i have gone thru all the checks lost!! any input would be great
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