| Engine Battery No Charge [message #363290] |
Tue, 06 April 2021 23:53  |
Afastchief
Messages: 9
Registered: October 2011
Location: King NC
Karma:
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Junior Member |
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I was returning from a short trip to burn off fuel so I could drop tanks and replace vent lines. It was getting dark and by time I got home the headlights had set with the sun(Very Dim). I looked at voltmeter and it was showing around 10v. I charged engine battery and checked voltage at isolator center post and reading was erratic but mostly around 8-10v. I removed alternator and took it to local alt/starter rebuild shop and a week later I have a rebuilt 80A alt that was run on the bench for 20 minutes and met all GM specs.
I installed alternator and fired it up with dash voltmeter still showing 10v and when I turned the lights on it dropped to 8v. The dash voltmeter did not follow engine rpm at the slightest, rock steady. I checked voltage at isolator with the following results:
Top: 12.02 steady
Center: erratic, i.e.… 0/2/4/0/18/0/2 etc….
Bottom: 12.45 steady
I removed all wires on isolator and cleaned and treated with CAIG Deoxit, reinstalled, started engine and rechecked numbers; no change?
I am looking for suggestions or a good T/S link.
Thank you,
Alan Edmondson
King, NC
1978 Royale
Alan Edmondson
King, NC
78 Royale, engine bay insulation, dual cockpit fans, Victron 160A isolator, Yandina combiner, Victron BMV 700 battery monitor with Bluetooth, Progressive Dynamics 9200 converter
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