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Hi, welcome to Just Answer. My name is***** sounds like you either have a faulty ignition switch or a faulty neutral safety switch or there is a problem with the starter or the wiring or the linkage to the transmission. First I would try starting the car in neutral and see if it will start. Next I would make sure that the linkage from the transmission to the shifter is still connected. Next step would be to test the voltage at the starter solenoid when the key is turned to the start position. If you have 12V to the solenoid and the starter does not turn you simply have a bad starter.
Let me know if you have any questions.
You obviously did not read my answer! I never said try this and try that! I said test this and test that! If you had followed my advice with systematic voltage testing you would not have needlessly replaced the ignition switch! I ignored the statement about the speedometer because it had no bearing on the no start.
Good luck with YOUR problem.