Vibraslapp

Dear jeep owners,
I have found the ghost in the machine! Many of you have shared these symptoms. If i had gone to the dealer I would not have figured it out and I was close to bagging it. Before I tell you what it was I will share the problem path, it should make a good thread. I had the mystery choking, spuddering. I went of the trouble codes and replaced a lot of sensors. BEFORE YOU DO, check your fuel pressure with a kit. It costs about $44.00. I would have inconsistant fuel pressure.Sometimes fine sometimes not. Here is a list of what I did:

TPS
IAC
O2 sensor
plugs,wires,rotor, even pulled and cleaned distributer
spark test
air filter
all vacuum lines, cleaned, new boots
new grounds
voltage meter, ohm meter on all sensors
unbolted flange at exhaust manifold to rule out cat,& muffler
went through fuel system,new filter,checked lines,pump was priming,sending unit ok.
NOW WITH ALL THAT,RESET PCM, & STILL GOT TPS,MAT,& O2 lean CODES
So, off advice from a user here, I did extensive fuel pressure tests.
When i was only hitting 20psi out of the tank I decided to pull the fuel pump.
Upon pulling it I noticed the fuel hose that comes off the pump & connects to the fuel pump hanger(a small elbow piece) had some small cracks and was barely hanging on to the hanger. I had already purchased a new pump. Thankfully it would not fit in my original hanger. So i replaced the small elbow fuel line with top grade line and made it straight and shorter so it could not come loose from the hanger on hard bumps. I reinstalled original equipment(with a new strainer,also my old strainer had a loose plastic tube in it).
Wha La! My 93 XJ now has 38psi in the fuel rail.should be 31psi.
SHE F"N HALLS *****.BETTER THAN WHEN I PURCHASED HER OVER 15yrs ago. 260k miles,origanal engine and manual trans.
Also I had started to run over 210 temp alot. She now runs at 190 even at 5000 rpms.
In short, no more fault codes(prob. didn't even need to replace all that *****)
and runs cooler all over that damn little elbow fuel line in the gas tank.
Hope this helps, peace out!