So, I had what I assumed was the typical bad starter contacts on my 2000 4Runner with 198k miles on it.

Then tonight while struggling to get contact (I would either get a click and a hum or a hum when turning the key, or sometimes it would begin turning the starter then lose connection) and a start. Suddenly the engine starting turning (Yay!) only then it didn't stop when I released the key. It went on for about 3-4 minutes before it finally stopped, during which I completely removed the key and walked away, looking to get tools to disconnect the battery. Finally the starter disengaged and it started (luckily this happened while the key was in the ON position), allowing me to rescue a cold and tired 7 year old from the far end of the trick or treat walk. Ironic that getting the starter to STOP became the desperate need after desperately wanting it to start so many times recently.

So, does this still sound like starter contacts? Or does that point toward ignition issues?

you're in the 4th gen forum..