Transmission issues 2000 ford focus zx3
Hello, I am a new member and in need of some tips/advice..
I have a 2000 ford focus ZX3 with 165K miles, perfect engine, but the transmission is giving me trouble. It is not shifting like it should. heres what it does. If I press the gas and go around 25-30 it will messup and shift terribly but if I floor it the car shifts like a brand new car. barely any issues. plus if im going at a stable set speed and let off the gas and then re engage the gas it will mess all up and go all the way to about 4 or 5K RPM then it would get into gear and it would kick or make a nasty noise when it does get back into gear. What do I need to do to fix this? I'm more of a computer guy, im not that great with cars but I'm not bad either.. I just need some info because I don't want to get screwed when I go to the tranmission repair shop.. do you think i need a rebuild or does it sound like something small?
Also is there anything else I should do at 165K miles? I really love my car and i want to keep it for another 165K miles:)