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You would put on a new crank sensor because the ignition system won't work, it gives no spark. So now do you have spark at a spark plug wire end? A blue consistent spark? Probably good ignition system, as long as all spark plugs get a spark.
One thing you always want to check with no start is the fuel pressure. Turning the key to on should turn the fuel pump on and put pressure in the fuel rail at the engine. Autozone and maybe others rent or loan fuel pressure gauges. Multi-port injection systems have high pressure specifications, around 40 psi normally. That is what the injectors require to spray out fuel when they pulse and open the nozzles.
With the injector circuit, the first thing to check is if each injector has power to it with the key in ON. One power wire and one ground wire goes to each injector. The power wire is from a fuse that is powered with key on or key in start, and then it is spliced to all of the injectors. The injector grounds all run into the engine computer, where the circuit can be internally grounded for a split second and cause the injector to pulse. But anytime the key is on, the injectors have steady voltage available to them.
Sometimes a crankshaft sensor does not send the signal to fire either the spark or the fuel injectors. If the fuel pump relay is not getting power, the inertia sensor will not have power either. The inertia reset is just magnetic and does not depend on having power to reset.
You can check for current at the Inertia sensor and at the fuel pump relay. You can also have fuel pressure at the test port without the injectors working, which is the easiest test of all,
You need the sequential firing pulse for the injectors. Have you checked the EEC Relay?
Try to determine if it is fuel or ignition related.
Turn key to on, do you hear the fuel pump turn on for a couple of seconds? It should come on briefly to pressurize the lines and fuel rail on the engine. Do you have fuel at the engine under pressure? Easiest and preferred way is to check fuel pressure with a pressure gauge at the test port on the fuel rail. With key on, pressure on mpfi systems should be 40-50 psi.
If there is gas in the fuel rail, test ignition by checking for spark on the end of a plug wire, with the engine cranking over. If you have a blue snapping spark, then ignition is probably good-may want to check more than one plug wire. Hold the metal terminal end of plug wire 1/4 inch from a ground on the engine, the engine block or a bolt or metal bracket. Verify a blue snapping spark, repeatedly, as the engine cranks. An orange spark, intermittent spark, or no spark points to an ignition problem. One thing you haven't changed is the ignition control module. This module, when signaled by the pcm, is what cuts the primary current to the coils for spark to be generated.
If you have both gas and spark, check the fuel injector circuit. Post back if you need help with that. There should be an injector fuse that needs checked. Also a fuse for the fuel pump, if no pump action, besides the fuel pump relay.
JUST BECAUSE YOU HAVE FUEL PRESSURE DOES,NT MEAN THE INJECTOR IS FIRING YOU COULD HAVE 100LBS PRESS. BUT IF PCM DOES NOT COMMAND INJECTOR TO FIRE IT WANT MATTER I SUGGEST HAVING NOID LIGHT INSTALLED @ INJECTOR CONNECTOR TO SEE