Compression Ignition Addict
Join Date: Oct 2011
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Check all connections on the starting circuit. This includes all batt terminals, grounds on block, posi on starter solenoid and starter, and the connecting surface between the starter and trans.
Check voltage (with multimeter) the bat voltage when sitting, with gp's on, and cranking. Might need an assistant for this. Let us know all those voltages.
It honestly does sound like sub par batteries. What cca were your bats rated at?
The gp's might be dead shorted and drawing too much amperage. This measurement would best be taken with a clamp-on amp meter.
2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
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