02 Accord Shifting problem
Hey all, new guy on the forums (please be gentle!). I am having an odd, intermittent, issue with my car shifting gears. I noticed it a few days ago on the interstate as I was trying to pass someone. I gave it some gas and when it tried to downshift to accelerate, it was like it didn't go in to gear, and the RPMs just jumped between 3.5k and 4.5k RPM. I let off the gas for a couple of seconds and then got back on, and everything went back to normal.
This doesn't happen every time, however. I do notice my car somewhat stutter a bit switching gears when it's accelerating (but again it's not every time). It also seems that my radio went out around the same time, but it could be unrelated.
My check engine light has been on, but I had it checked already and it's an O2 sensor issue. I'm going to get it checked again to make sure no other codes come up.
I was hoping someone could shed some light on what may be the cause, or what I should be looking for. If it isn't apparent yet, I have minimal knowledge on auto mechanics, but I'm trying my best to learn. Any help would be appreciated tremendously.
Additional Info:
The car has 155k Miles on it, and the transmission fluid was taken care of 40k miles ago.