Battery or Alternator/voltage regulator?

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#5 (permalink)

09-13-2013, 12:45 AM

PANAVIA

CC Member

Join Date: May 2008

Location: San Jose CA, CA

Cobra Make, Engine: SPF_R_/BRG/FRBoss302/327CI/FordEFI/Under_Car_Exh/

Posts: 2,523

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My rule of thumb ; - at idle the alt should be at 13.6 or better , with full 14.5 at 1500/2000 rpm - as for amperage if you are stuck in traffic , and your alt is rated at 100A , that 100A is available at 2500 or so RPM and up.

A 7 year old optima is probably running on borrowed time, but if it holds a charge , keep on using it.

If you need further help , we would be happy to see you.

Steve

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