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| RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections |
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Thread Tools | Display Modes |
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| RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections |
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Thread Tools | Display Modes |
05-06-2008, 12:21 AM
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#1 |
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business as usual
Join Date: Apr 2008
Location: Emerald City
Posts: 154
Rep Power: 0  |
Why does my battery keep on dying?
Replaced old alt with a new one about a month ago.
Ever since, I've been through 3 new batteries and 2 charges...ideas plz?
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Bitch |
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05-06-2008, 04:29 AM
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#2 |
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RCC Contributor
Join Date: Feb 2008
Location: Grand Rapids, Michigan
Posts: 530
Rep Power: 18 |
Have you confirmed that the new alternator is charging?
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05-06-2008, 09:42 AM
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#3 |
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Rotary Fanatic
Join Date: Apr 2008
Location: Louisville, KY
Posts: 302
Rep Power: 18 |
Yeah check your voltage while running.
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My car blows up everytime I start it, it's rotary  
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05-06-2008, 01:55 PM
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#4 | |
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business as usual
Join Date: Apr 2008
Location: Emerald City
Posts: 154
Rep Power: 0 |
^^^ Voltage meter bounces from 10-12 volts.
Quote:
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Bitch |
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05-06-2008, 02:04 PM
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#5 |
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Rotary Fanatic
Join Date: Feb 2008
Location: Richmond, KY
Posts: 322
Rep Power: 18 |
You may also have a ground problem. Mine was doing the same thing a few years back. I got some wires with alligator clips on them and attached one between the engine and body. Voltage went right up. Switched it with a battery cable with double ring terminals and haven't had a problem since.
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Mike Chrisman  83 Rx7 Turbo  85 Rx7 GS 89 Rx7 GTU http://www.cardomain.com/ride/409797 "Don't apoligize for being Patriotic, F**k 'em. TK" 
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05-06-2008, 02:22 PM
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#6 |
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business as usual
Join Date: Apr 2008
Location: Emerald City
Posts: 154
Rep Power: 0 |
Well, used a volt meter batter messured out to be 12+ volts, but the alt was at 11.78...
Maybe I installed the alt incorrectly, but everything seems to be plugged in properly.
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Bitch |
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05-07-2008, 09:59 AM
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#7 |
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RCC Contributor
Join Date: Feb 2008
Location: Grand Rapids, Michigan
Posts: 530
Rep Power: 18 |
On the "T" plug that goes into the back of the alternator, the vertical part of the T should be showing 12 volts while the ignition is on. This sends the signal to the alternator, letting it know the current voltage of the system so it knows when to start charging. If you don't have 12 volts showing at that part of the plug, then the alt will not enter charge mode.
If it shows no voltage, then check the fuses under the dash.
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"Learn from the past, or it will become your future...." '85 GS 12a + LSD/Sterling carb/Respeed coilovers/Respeed front swaybar/Respeed adj. rear spring perches/Illuminas/Bilsteins on rear AutoX vids @ http://www.youtube.com/user/Kentetsu1 |
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05-07-2008, 09:30 PM
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#8 |
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business as usual
Join Date: Apr 2008
Location: Emerald City
Posts: 154
Rep Power: 0 |
Turned out to be the alternator. Hopefully my replacement will do better justice. Thanx for the helpful responses.
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Bitch |
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