For those that have been doing this a while, are the extruder motors something that need replacing every so often?

My Monoprice Maker Select Plus has stopped extruding filament. The unit is only a couple of months old, but I have used it a lot. It will load filament, and start a print, but after a short while it will just stop pushing filament out. I have changed the drive gear. I took off the extruder nozzle and don't see where there is anything wrong with it but have ordered a replacement anyway. I am trying to print with filament that has produced prints before, and at temperatures that have produced successful prints before.

This same thing happened to a previous unit, but within the 30 day warranty and I sent it back and they replaced it. I'm outside the warranty period on this one so trying to figure out what the problem might be on my own. Besides the extruder motor, any suggestions as to what the problem might be?

Thanks.