2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

low voltage

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Old Nov 26, 2002 | 01:06 AM
  #1  
presetlimits's Avatar
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From: augusta ga
low voltage

in the mornings when i start my car my voltometer will say 12 right when you start the car but if you tap the gas to 3k it'll jump to right above 14..whats the deal?
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Old Nov 26, 2002 | 01:49 AM
  #2  
cymfc3s's Avatar
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From: Half Moon Bay, CA
the higher the RPM, the more efficient the alternator becomes. After starting, the alternator does double duty by re-charging the battery. If it struggles to keep up with 12v all time, you could be looking at a weak alternator.
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Old Nov 26, 2002 | 03:34 AM
  #3  
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From: Albuquerque
more rpm = more voltage.
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Old Nov 26, 2002 | 09:18 AM
  #4  
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From: Rohnert Park CA
At idle the alt should be putting out at least 13.6 volts with the lights on. If it does not, it is getting old and needs replacement
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Old Nov 26, 2002 | 09:38 AM
  #5  
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From: augusta ga
its only about a 2 month old FD alternator
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Old Nov 26, 2002 | 09:56 AM
  #6  
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From: Seminole, Florida
You may need to check connections make sure they are tight and super clean.

You may need to add more grounds.

you should have 3 grounds.
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Old Nov 26, 2002 | 09:58 AM
  #7  
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From: augusta ga
3? i was going to try and rewire the charging circuit when i got the car back from the paint shop
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