Other Fuel System Pump problems of the 2004 Jeep Grand Cherokee

I've always had trouble with my 2004 Jeep Grand Cherokee. Especially with the fuel system and fuel pump. I've had to replace my fuel pump 3-4 times. Now its reading the rpm extremely high. I've also had to replace my Jeep's computer because I was told that was the problem. It seems there's also electrical issues. I still can't find the exact problem.

I brought my 2004 Jeep Grand Cherokee June 2004, barley used. I have repaired a lot of things under the hood especially with the sensors and the black harnes wire in the drivers side door, it split in 2 and stopped running in the middle of traffic. I had to have it sliced and mended together, after 8 months recently, I had to repair the black wire again due to moistue setting in the tape and wires, I read on the internet chyrsler should have never put the black or yellow where's in the door, because they bend and break. This caused my the lights to stay on and remote side mirrors not to work. The dash board meters went haywire, I had the alternator replaced, sensors and throttle body cleaned and replaced. The engine light stays on constantly now, giving codes of p0141, p0137 with bad fuel mpg. It rides like it is smootherd in feathers. I was advised that it could be the fuel pump. I recently had the fuel injectors replaced, the engine light went out, for 2 day's and now back on. How frustrating after buying this car for $23,900 in 6/2004, I have paid an estimate in car repairs of $4-5000 so far. If Chrysler knows about these problems they need to confess, and fix these problems with recalls. Please look into these issues. I am sure others are suffering too.