Help Please! 2006 LR3 HSE

[Twism4]

A couple of weeks ago LR3 started running rough at idle and had no power. Took it in to have codes read. Got P0305, P0300, P0171. Took it in and they ran diagonistics to check for air leaks, misfires, and fuel. Told no air leaks, and fuel supply is good to the engine. Said I should have cylinders 4, 5, & 6 coils, and #5 spark plug changed. Still no change. Had bank 1 back O2 sensor changed, thinking it was bad and telling ECU that truck was running lean and over- correcting by dumping too much fuel into the engine causing the misfires. Not the problem either. I have spent so much time and $$$ and am not any farther along with the problem(s). Anyone have any ideas?? Sensors? EGR Valve? Throttle Body Sensor? Other O2 Sensors? Dealership seems to be perfectly content with taking money and not fixing the problem. I'm thinking maybe a match and some gasoline will fix the whole thing.

[Rovin4life]

swap the injectors around. That might be your issue.

if the injector is bad then its probably giving you a low dose of fuel causing the lean code.

if it was me, I would have swapped coil number five with seven and spark plug number five with number three.

[Twism4]

Thank you for responding! I swapped fuel injectors and reset. Drove around for about 30 mins or so. Running better, but still running rough. Check engine light did come on. Ran it by auto part store and had the codes read. Got a P0171 code and no other codes. Gotta be front O2 sensor on left, right?

[Rovin4life]

no, five bucks says you have an issue with clogged injectors.

I recommend a bg fuel injection service. it works, trust me fixed quite a few of those vehicles with it.