Hi,
Does this randomly. Grid heaters work as does the WIF sensor.
Overdrive off switch clicks & lights as usual, but no OD sometimes.
When this happens, the water in fuel & wait to start lamps light steadily & sometimes flash.
Its a 91.5 with no crank sensor or tach plug, and an ECM with an external regulator.
Truck doesn't have AC or cruise.
Thx!