Mike1 Posted June 11, 2023 Share Posted June 11, 2023 (edited) I have 1994 Mack em7 300 V Mack 1 randomly shuts off at idle and when driving I had injection pump rebuilt is it possible to have a bad alternator or regulator that is supplying erratic voltage to injection pump Edited June 11, 2023 by Mike1 Mis print Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted June 12, 2023 Share Posted June 12, 2023 I always suggest checking the Duetch plug at the injection pump. Those pins can come loose in side.. also check for bad wires on the truck side of the harness.. 1 Quote Link to comment Share on other sites More sharing options...
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