I was referring to the engine diagnostics basic troubleshooting flowchart. It takes you from start to finish on the start-up capabilities & necessities. One thing you might try thats easy first off beings you changed the CPS etc. Take it out of closed loop...like pull the fuse in the OVP. Crank on it & see if it starts up. If so let it run a short bit, then shut down & replace the fuse. Then try to start up again. They can get cantankerous & get locked out. If it starts then it will give you a run anyway to go from there. Usually, there is only one thing that quits, that leaves a car where it won't start. Lots of things wrong is only from a tragedy...like a wreck, fire, human intrusions. You may have disturbed the old wiring when you replaced the CPS??