The engine may fail to start due to an electrically shorted sensor. Some of the sensors may internally short and not blow any fuses. A technician may find no spark and no operation of the fuel injectors in the diagnosis. One way a technician may isolate the defective sensor is by disconnecting sensors one by one to see if the engine starts.
Average mileage: 277,678 (277,678–277,678)
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A connector to a sensor to the water pump came loose. Had to reconnected and the truck started.
im getting fuel but no fire replaced cam sensor but still no start i wonder could the ignition control unit could be bad