1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

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Old 03-06-02, 05:20 PM
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back with rotaries

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problem

my volt meter is reading 12.5 volts and is miss firing alot. does my alternator is is probably bad or is something elses? thanks
Old 03-06-02, 05:54 PM
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hmmm,go down by the starter and check the ground,also check it by the coils.

watch your alternator belt for slippage.
try to get a reading right from your alternater.
pos is the big nut on the top of it.
if none of this helps,you need a new alternator.
Old 03-06-02, 07:58 PM
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EliteHardcoreCannuckSquad

 
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Why is 12.5 volts that bad? Sounds pretty normal to me - maybe a little on the low side.

I think you might just have a grounding problem. Try running a second grounding cable to a bolt on the engine or whatever, see if that solves the problem. BTW my volts used to waver at 12-13, and the second ground brought it up to 14 and rock solid.
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