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

S5 FC voltage meter question.

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Old Jul 4, 2009 | 03:42 PM
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S5 FC voltage meter question.

odd question though. In my 91 n/a FC the voltage meter on the dash reads a little above 12 while my digital voltage meter say 12.65 @ the battery and this is with the ign. on. What would cause an inaccurate reading on the dash? any ideas?
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Old Jul 4, 2009 | 08:22 PM
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From: https://www2.mazda.com/en/100th/
12.65 IS a little above 12... should be more like 13.5-14 with the car running though
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Old Jul 4, 2009 | 08:34 PM
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Are you retarded?
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Old Jul 4, 2009 | 08:38 PM
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Originally Posted by KhanArtisT
Are you retarded?
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Old Jul 4, 2009 | 10:28 PM
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I have a question. What is the tick mark 1/3rd the way up the voltmeter represent? 13.6?
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Old Jul 5, 2009 | 02:55 AM
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there is a voltage drop from the battery itself to the gauge. It's going to read lower.
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Old Jul 5, 2009 | 01:30 PM
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After a series of electrical problems you forget what 12.5volts looks like. This is with the car NOT on but the ign position on. Thanks
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