Have new coils, spark plugs, crank pickup sensor, tried new computer but O'riles ordered wrong one. Waiting for right one to come back old number was F57F-12A650-AB ordering a F57F-AB would like to know if new unit will need to be flashed. To let you in on start problem person before me changed motor and did not replace by reconnecting main ground wire ran it till truck has no spark now THANK YOU!!

Would like to know if any one has any Ideas would like to get truck running THANK YOU!!!

 

ecu unit does not need flashed as long as you do not have a remote alarm system on the car or truck fighting a fuel problem now be sure you always have all grounds connected. If you buy one with grounds not installed properly you might want to have second thoughts.