Quote:
Originally Posted by oldman
So I just put the generic Amazon special current clamp in ziptied it so the loop is kinda parallel to the cable. Drove it a few miles and the volts stayed above 14 which is expected for a battery at 75% charge. I thought I got an OEM battery cable current clamp last year but who knows there are so many knockoffs. I probably EBay one from a junk yard that way I know it is OEM. Don't have high hopes either way. But I did save $5 on gas over the last decase... maybe.
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That 14 to 14.5 V is the charging voltage the alternator is using, it isn't the battery voltage. Once the alternator is done, and indeed it'll take its sweet old time to juice up the battery, the gauge displays the actual battery voltage, which should be between 12.5 and 12.7 V.
I never had these issues, cold starts have been peppy and stable since 2018, only hot restarts are slower and stressing the starter, somewhat less after installing a ground strap in the engine bay.
Even then, the car has never failed to start, so I don't obsess over this much. The starter probably still gets heat soaked, and I don't blame it, I have long tube headers and a beefy supercharger in there.