04 Santa fe base 2.4 engine

We purchased this 2004 Hyundai Santa Fe with the 2.4 liter engine automatic transmission, 4 speed automatic. After a lot of problems because we were actually conned by The Man we purchased it from, and then, spending $700.00 which we never have, to repair the timing and camshaft crankshaft sensors oh, and a radiator fan that did not work, also after replacing the left CV axle complete, and several other costly things, I would like to know if at a 134000 miles will the transmission kind of Gallup, like it missed a beat, just once in a while, but enough that it's noticable, the fuel milage is around 20 mpg!???
Any advice helpful!

 

Caveat Emptor
buyer beware
I feel the same way when I think about all the money I spent to fix my Hyundai Elantra
Cost me almost twice what I paid for the car to fix it.
Now, it is just a rust bucket.