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wwest wwest is offline
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Join Date: Jul 2009
Location: Stunningly Beautiful Pacific NW.
Posts: 5,292
Tach jumping is often the result of an over-voltage in the engine compartment, not necessarily at the battery. Battery is a HUGE sink for charging voltage/current, even moreso for over-voltages.
Old 11-19-2011, 08:35 AM
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