Weird charging issue. Have to rev over 3K to show charging. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Longhorn 70 · 10-15-2013, 02:26 PM

I have done a few searches to find this or a similar issue on the board. No luck. So here goes. My truck runs well. It has an alternator with external regulator. The gauge shows it charges fine ONLY if I rev it over 3000 once per driving session. After I shut it off and restart the truck, it doesn't show charging on the ammeter until I go over 3000 RPM. I have checked grounds, the meter, ignition switch, alternator (2 of them), changed the regulator made battery cables out of 00 cable and soldered the ends on and replaced the fusible link. What am I overlooking?

10-15-2013, 02:26 PM	#1
Longhorn 70 Registered User Join Date: Dec 2012 Location: Chandler AZ Posts: 1,149	Weird charging issue. Have to rev over 3K to show charging. I have done a few searches to find this or a similar issue on the board. No luck. So here goes. My truck runs well. It has an alternator with external regulator. The gauge shows it charges fine ONLY if I rev it over 3000 once per driving session. After I shut it off and restart the truck, it doesn't show charging on the ammeter until I go over 3000 RPM. I have checked grounds, the meter, ignition switch, alternator (2 of them), changed the regulator made battery cables out of 00 cable and soldered the ends on and replaced the fusible link. What am I overlooking? __________________ 1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9



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