Starter stays engaged

you have a short in the system get a multi meter to test circuit

SOUNDS LIKE BAD SWITCH

try using a scan tool to reset the ECM
having a battery disconnect for any length of time can corrupt the CPU program in the ECM

It sounds like you have a bad actuator. This is attached to the starter and has a solonoid that pushes the starter motor gears into the engine gear. If the solonoid is faulty this may happen. Also check alignment of the same.

You most likely have a short in the wiring to the starter.

Last time I saw something like that a vehicle's exhaust headers created heat which eventually melted the wire's insulation and several of the wires were exposed and shorting on each other and the ground of the vehicle. If possible, get the car on a lift and inspect your starters wiring....

Hope this helps...

it sounds like the starter solenoid contacts are not separating to stop the starter from turning.the run on is due to the starter not stopping causing the motor to continue to spin.replace the starter unit as it will have damage due to being engaged with the motor running,also have the flywheel inspected to make sure the teeth are not damaged on it.

The starter solenoid is failing. Sooner or later the starter will probably not disengage after you turn the key off. Then you'll have to disconnect the battery in a hurry. It's no fun. And at that point the whole starter will probably have to be replaced. Depending on how long it takes you to unhook the battery. Trust me. That is no way to start your day. It's really bad for your blood pressure. Good Luck.

make sure you have power to the b+ terminal of starter. Also make sure you got power to the ignition terminal on starter with key in the crank possition. With key in the crank possition check that power is being tranfered from solenoid to motor. If all these check ok replace starter. If no power in the ign(small gage wire on starter) possible ignition switch or p/n safety switch. If no powere on B+ check battery, battery cablem fusible link.

you can but is tricky depending on how easy the starter is to get at.
take your ground cable and hook it to the frame somewhere it will make good contact and touch the possitive cable to the big wire on the starter keep in mind that it will turn over as soon as you touch the big wire on the stater,so turn your ignition key to run and make sure it is in neutral if it's a standard