08-05-2020, 08:32 PM
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CC Member
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Join Date: Jun 2018
Location: Seattle,
WA
Cobra Make, Engine: ERA 427sc
Posts: 98
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Not Ranked
New battery. Old one was dropping to zero volts on start, while the new one stays above 10V.
I think the inductive multimeter amp readings are behaving as expected now? Spiking up to 35A on startup (too high still?), but settles down to around 20A pretty quickly. Or should that be going to zero after the battery is topped off?
Similar readings at battery and alternator.
Amp gauge in dash is still pegging 60+ while ammeter reads ~35A.
Here's a video capturing both the output of the alternator and the dash gauge (sync'd up the videos the best I could):
https://drive.google.com/file/d/1Re0...w?usp=drivesdk
Occasionally (as captured at the start of this video), when the dash gauge spikes to 60, the multimeter reading drops out. Does this indicate a short somewhere? Or maybe the meter is having trouble reading the poorly smoothed DC current coming out of the alternator? Voltage regulator starting to die?
Seems like I should definitely replace the dash amp gauge. Still not clear if there's another issue here. Thanks for all the help!
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