Well a couple of weeks ago I managed to change out my fuel pump and when I took it for a drive about 26 miles away I noticed it lacked power which was notable before changing pump, and it still had that acting like it was running out of gas problem but it would do it once then farther down the road again and it had me really confused. After I got home when I got out I left it running and it sounded like there was a can with bb's being shook. So I immediately thought okay that explains it and why sometimes the exhaust manifolds heat up excessively enough to melt the plastic cover over the spark plug wire without even touching it but being near it. So I was told before that my catalytic converter could be stopped up to cause it to do that. Well that next weekend I got out my sawzall and cut it off. I inspected by shaking it and putting a flashlight on the other end of it and saw no blockage. Now I have to wait until I get paid so I can order clamps for it to hold it temporarily while I drive to town and have it welded back in place. But I'm still dumbfounded as to why it's giving me such headache and acting like that and losing power in the process. It has 156259.0 miles on it. Also I've never changed the fluid on the transmission on it cause in my past vehicle experience when I do the transmission goes out not long after that. I always make sure to put correct amount of fluid the vehicle calls for too and change the filter as well. I didn't do it at every oil change either. But when my vehicle is cold it takes some time before it pulls after shifting it in drive and I am concerned about that. The engine even roars as I accelerate it too but won't pull till it decides it's warm enough I guess.