Turn ignition but engine won't roll over . The starter won't engage when the ignition is turned to the start position. However, at the same time, the starter will just spin if i jump the solenoid with a screwdriver, it won't engage.

When you turn the key to the start position what's happens ? Nothing , do the lights dim ,dome light ? The starter doesn't engage an spin the engine ? Is the security light lit on the instrument cluster ? Anti-theft system problem may disable starter engagement . You say battery is good ? How do you know ? Headlamps shine bright ? Do you know how the starter circuit works ? Does it use a key start ?
Circuit Description (Key Start)
When the ignition switch is placed in the Start position, a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the Start position. The BCM then sends a message to the engine control module (ECM) notifying it that CRANK has been requested. The ECM verifies that the transmission is in Park or Neutral. If it is, the ECM then supplies 12 volts to the control circuit of the crank relay. When this occurs, battery positive voltage is supplied through the switch side of the crank relay to the S terminal of the starter solenoid.

https://www.youtube.com/watch?v=SNLcW7FhQFw&t=17s

Is the engine turning over with the key in the start position? If the engine is not spinning over and you hear a whining noise, the starter is not engaging the flywheel. If the engine is turning over with the starter engaged, the engine has most likely jumped time that creates low or no compression which results in the whining noise.

ses this causes and fix it. God bless you
Battery Corrosion: Over time your battery connections can become dirty, or corroded. This corrosion breaks the connection your battery has with the rest of the car, and it won't start. Try cleaning your battery posts and try to start the car again.
Bad Igntion Switch: If your battery checks out, but the starter is still silent, it may be a faulty ignition switch. Turn the key to the on position (not all the way to start). If the red warning lights on your dash don't light up (and your battery connections are clean), the ignition switch is bad. If they do light up, turn the key to the start position. The dash warning lights should turn off at this key position (most cars). If you're not sure, turn on the headlights. When you try to start the car, the lights should either dim (a lot) or turn off completely. If they do, your ignition switch should be ok. If not, the switch will need replacement.
Bad Starter Connection: Corrosion can not only keep your battery from connecting, it can affect any electrical component, especially the ones exposed to the elements like the starter. If you have a helper, you can test the connection by holding a circuit tester lead on the wire that engages the starter. This is the smaller of the two wires connected to the starter. Be sure no part of your body is near the moving parts of the engine - it could still start at any time! Have a friend turn the key and check the current. If you're getting current to the starter but it ain't spinning, it needs replacement.

Check Engine Light flashing when accelerating ,severe engine misfire . Something in the ignition system is breaking down under a load . If the starter engages an spins the engine when you turn the key to start an it doesn't start an run , it has no spark or fuel pressure . If you don't know this or how to diagnose .suggest you take your vehicle to a qualified repair shop . Pull two plug wires off the top of the same coil an crank the engine , if you do not see a spark jump from one coil tower to the other you have an ignition system problem . ignition module or crankshaft position sensor


Flashing check engine light CarMD

sounds like you need a new ignition, reason nothing works cause once it doese turn over n starts the car the tumbler is stick in the starting position jus not far enough to keep the starter engaged but far enough the it still trying to go trough the start process which cuts the power to everything else till the ignition returns to the on postion

did you try jus turning the ignition far enough to when the starter engages jus let go of it so the car doesnt start and see if everything else still doesnt work if it dont i belive its the igniton

also with out starting it or engaging the starter as in just turning the key on to get power does anything work?

So the problem has been occuring for a year and you are just now trying to fix it? Sorry, I just simply do not understand why people do this...keep driving it until it won't drive anymore even though you KNOW it has a problem....Maybe you can explain this to me???

If you can hear the starter clicking when you try to start it, then you have a bad starter. If it makes no noise at all. then you most likely have a bad clutch switch.

I would lean more towards your ignition switch being bad. Although you could be right I have not seen that problem very often. More often than not its the ignition switch. Good luck.

The component is a starter. When you insert your key into the ignition and turn it, you switch on the power to the coil and vehicle computers. By turning the key to the start position it will supply power to the starter and solenoid which cranks the engine until you release the key allowing to return to the ignition on position. If the battery is weak the starter solenoid may engage producing a clicking sound, but it will not crank the engine. Another test is to turn on the dome light and try to start the vehicle, if you see the dome light dim when you are trying to start the car the battery is weak or the starter has a short. Starters are temperamental at times and can be intermittent working sometimes and malfunction other times. Your ignition switch, fuse, or relay could also produce symptoms of your vehicle not cranking.

Is the security light blinking? If not, check the starter.

The problem is either in the mechanism that pushes the rod that activates the ignition switch from the key lock cylinder, or the ignition switch is defective.