i camry suddenly lost power while going 65 on the highway,when i pulled over it would not go in drive for more than a few feet, we let the engine cool down then re-started it we could hear it change gears from rev-drive 2 put it would not accelerate for more than a few feet. I have not hsd the transmission fluid checked , I just got the car a few months ago from my dad after he passed away. Any suggestion?, could this be costly re-pair