Originally Posted by boyter
Stoped and fueled up after fueling went to start. had no wait to start light. found blown fuse under hood replaced fuse wait to start light worked no start, was told bad gpr replaced it with a cheeper relay that should have worked. truck started and ran for about 3 hrs. parked truck and gpr kept heating the glow plugs. bought the correct relay started the first try but nothing since and now the wait to start light wont come on no bad fuses but a confused owner please help
That is usually an indication of the fuel heater in the fuel filter bowl shorting out. Unplug the heater, recheck that 30a fuse and see if the light comes on and sarts.