Ignition won't turn off

ignition keylock cylinder broken or could have the wrong ignition key.

Inspect the old ignition cycle which is out.Is there any problem noticed of Ignition cylinder getting worn out.
Because when issue of ignition not turning off,its faulty ignition lock cylinder or faulty ignition switch.I suggest re-inspect the new ignition cylinder.
For more help,click the help link mentioned below:----

Ignition Switch Will Not Turn Off?
http://schematicsdiagram.blogspot.in/2012/04/ignition-switch-will-not-turn-off.html
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1995 Ford Taurus: Ignition switch not turning OFF?

http://repairhelpcenter.blogspot.in/2012/06/1995-ford-taurus-ignition-switch-not.html

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Ignition Problem Troubleshooting

http://whoisbyme.blogspot.in/2012/07/ignition-problem-troubleshooting.html

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These will help.

Thanks.

many things will cause no start problems could have faulty ignition switch.use test light see if power going to starter if not check ignition fuse to starter.if power going to starter, more likely starter solenoid or starter faulty.if ignition fuse okay and starter and solenoid okay still no start problem could be in the ignition switch or inhibitor switch faulty.code scan for faulty theft security system which will also cause no start conditions.

Make sure your steering wheel isn't locked. Sometimes a key won't turn until you jiggle the wheel while trying to turn the key.

check battery

Done cars have a kill switch if they are low on oil. Check your oil. If the oil is good, it may be the ignition switch.

Check the coils that have been replace for bent or broken prongs that plug into the ignition control module and if nothing looks damaged then i would think the ignition control module is faulty.Replace ignition control module.

I have had this happen on my 98 Voyager. Just have a new key cut. This new key will sometimes cure the problem. The older keys get worn out and won't unlock the ignition. Try this before a much more expensive and time consuming change of the ignition.

This happened to to me with my ranger. I went and bought in ignition and a junk yard and no problems after that. That way your not out of a lot of money.

Hello and welcome to FixYa!
If it's not turning over then the problem will be on the firing. If there's no current to the plugs, the engine won't fire up. Few things to look at to resolve the issue... First, the ignition coil can be faulty. Second, The ignition switch can be faulty. Third will be the starter. If it's faulty, it won't kick the flywheel. One good reason why it won't turn over.
Hope this helps and thank you for using FixYa! Have a good one!