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Charging system

L

LUCKY13

Guest
My alternator and voltage regulator and battery are all new on my 65. The charging system works well except at 750 rpm idle with headlights on, then the needle on my guage moves slightly to the discharge side. As soon as the rpms rise above 1000, the needle moves back to the center or slightly to the right of center. I haven't measured the voltage to the battery at idle. My battery stays charged. Is this something I shouldn't worry about? Could it be the voltage regulator, even though it's new?
:Steer
 

Tom Bryant

Well-known member
Administrator
Joined
Nov 9, 2000
Messages
7,333
Location
Edgerton, Ohio, United States
Corvette
1959 black 270hp (9/2/69) 1981 Beige L81(10/20/80)
I don't think so but I'd take a voltage reading just to be sure. If I remember correctly even though the guage is marked like an ammeter it is actually a volt meter and reads voltage instead of charge/discharge. It seems like John had something to say about this a while back.

Tom
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
Sounds perfectly normal to me - alternators don't produce much current at idle rpm, but output rises rapidly above 1000-1200 rpm. :)
 

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