I don't own a scanner or really know anyone with one. I really just want to fix it for peace of mind. Other than this, the car has been more reliable than anything I've owned.

I'm just not 100% positive that it's mechanically worn parts. Like you mentioned, I'm hoping just a solenoid or something stored in the computer.

Scotty may be on to something though, because sometimes when the car shifts into fourth, there can be a delay. It could be two separate issues, but if I can get the jolting one fixed, that's all I care about for now.