Post by
NISTECH »
https://forums.nicoclub.com/nistech-u7581.html
Mon Aug 01, 2005 5:16 pm
The factory flywheel had marks on it for the crank angel sensor. It has to be installed properly aligning it with the dowl in the crankshaft. If you dont do that it wont start. Or if your Aftermarket flywheel doesnt have the picup wheel on it then the ECM has no idea what cyclinder the car is on to start The injector and spark sequence. Once it does start though it uses the cam sensors to control spark and injector pulses.