I have a 95 eclipse n/a that wont start. it was running perfect, amazing actually, and then all the sudden wouldnt start. all lights and radio come on in the car(battery is fine, tried jumping it just in case.) the car doesnt crank(the starter isnt turning). i reset the computer, filled the slave cylinder(it was very low but i have a stage 2 clutchmaster), oil is full, fuses are fine, alternator is fine. battery has a good ground the only thing i can think it is is maybe a sensor(o2 sensor maybe...?) but id like to find out before i push start it and take it to a mechanic.

Check the main fuse in the fuse box under the hood. If the starter is getting power, replace the starter. If the starter isn't getting power, replace the ignition control module.

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If the starter isn't turning it is not an o2 sensor. You need to make sure you are getting power to the starter, use a test light and a voltmeter check and make sure you are getting 12 volts to the starter if you are getting 12 volts from the battery to the starter check and make sure you are getting 12 volts from the ignition switch which will be the smaller wire. If you are getting 12 volts through that wire then the starter is bad. If you are not getting 12 volts or any volts you need to make sure the fuse and relay for the starter are good then check and make sure you have power coming out of the ignition switch going to the starter you will need an electrical schematic for the car to trace the wires to find the correct one.