ZR-1 Net Registry Forums - View Single Post - '91, Cranks but No Start (and radiator fan runs?!)

mike100 · 02-23-2015

That said, the fan running is a sign that the ecm is in a weird state- like the diagnostic mode when you plug in the tech1 scanner or like when you plug the chip in backwards on the ecm.

02-23-2015	#6
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: '91, Cranks but No Start (and radiator fan runs?!) That said, the fan running is a sign that the ecm is in a weird state- like the diagnostic mode when you plug in the tech1 scanner or like when you plug the chip in backwards on the ecm.