1990 Camaro Rs 5.7 TBI randomly cut off mid drive, no start no crank condition followed.

Installed new starter car was cranking in accessory, removed the new starter and installed the old one, car is still cranking in accessory when it should be priming, in addition installed a new ignition switch and the car is still cranking in accessory. The purple wire trigger wire to the starter has constant 12v but then when i go to crank i get 0 volts, cant keep throwing parts at this car any ideas?

 

Sounds to me like the ignition cylinder jumped a tooth.

 

ignition cylinder could have jumped a tooth mid drive? no fusible links that could have blown out ??

 

that would just cut the power. You check the power coming out of the ignition switch and it match’s what you are getting at the starter?

 

the car is cranking now , but will not fire up it cranks when the fuel pump should be priming in accessory no volts at the purple wire in the run position