TomoHawk Posted July 14, 2002 Share Posted July 14, 2002 With the engine running, the voltmeter needle is always at 16V. Normal, or could the alternater be malfunctioning? Quote Link to comment Share on other sites More sharing options...
Guest greimann Posted July 14, 2002 Share Posted July 14, 2002 First verify with another voltage meter like a VOM or another gauge. If indeed at 16V, your regulator may be shot and so will the rest of your electrical system be if you run with that voltage for very long. Battery may go up in smoke too. Quote Link to comment Share on other sites More sharing options...
pparaska Posted July 14, 2002 Share Posted July 14, 2002 Be careful. It could be that you have a bad regulator (is this a 240Z with an external regulator?) I had that happen to my Z and it cooked the battery. Quote Link to comment Share on other sites More sharing options...
TomoHawk Posted July 14, 2002 Author Share Posted July 14, 2002 It's a '78 280Z... I checked the voltage at the battery: Switch off, engine off = 12.5V Switch on, engine off = 12.5V switch on, engine on = 13.8V This all sounds normal to me. I must conclude that the voltmeter needs adjusting or is malfunctioning. Quote Link to comment Share on other sites More sharing options...
yo2001 Posted July 14, 2002 Share Posted July 14, 2002 The factory 78 gauge is not accurate. Mine reads like 16v all the time. 78 is internal reg. Quote Link to comment Share on other sites More sharing options...
yo2001 Posted July 14, 2002 Share Posted July 14, 2002 Originally posted by yo2001:The factory 78 gauge is not accurate. Mine reads like 16v all the time. 78 is internal reg. There is a way to fix that too when you take out the gauge out. Quote Link to comment Share on other sites More sharing options...
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