I'm having a starter issue with one of my 4Runners. It's a '00 3.4L 4x4 LTD. Sometimes you can hear the starter motor turning but it won't start the engine. Sometimes you just hear a clicking noise, sometimes nothing at all. Battery is fine. Didn't touch it yesterday at all. Day before it was doing everything mentioned above. Just tried it 3 times and it fired up each time without any problem. This issue started last Sunday. Any ideas of what it could be? I'm hoping I can just get the OEM repair service kit and starter kit and not have to replace the starter itself.