Have a 95 yj 4.0 having issues with power ,it will idle good sometimes rpm will go up and down but when you put a load on it it falls on it's face. I have changed 6 injectors 4 hole, throttle position sensor, throttle idle sensor, air intake temp sensor, coolant temp sensor, map sensor, 02 sensor, plugs, wires, dist cap, rotor button, fuel filter, fuel pump, fuel pressure regulator, crankshaft position sensor and it still having issues. This all of sudden happened. Plz help.