im having some serious issues with my 96 xj. to start off it has 254xxx miles and the neon 703's and until last week ran great. one night it just starts missing and when you come to a stop it drops to 1oo rpm and wants to stall, cel was for the map sensor so i replaced it and no change, then it throws it for a miss on 1 & 5, i unplugged the injectors and re connected them and it ran good for a while then it starts doing it again the other night only worse so i replaced plugs, wires, cap, rotor, and stator(was broken into 3 pieces). it ran as smooth as it did new for an hoiur then it crapped out again and is now throwing p0171 lean bank 1 and when revving from low r's there is a quick squeal that sounds like its coming from the back of the motor. im stuck and any help would be GREATLY appreciated