Lots of codes cant fogure out cause

[bydptrsb]

I am getting a lot of codes with rough idle and running rough under low load. Codes are p0174, p0300, p0306, and p2196. I know that the 174 is lean on bank 2, 300 is a random misfire, 306 is misfire on cylinder 6, and 2196 is stuck rich bank 1 sensor 1. I just can't figure out what is going on exactly. I have new coil packs and plugs, new pcv valve, the egr is functioning, maybe vacuum is the problem. I don't know for sure. This is the first ford I have owned and had problems to really deal with and had to diagnose. It's an 03 eddie bauer with the 5.4.

 

[Hamfisted]

Could very well be a leaking intake gasket on or around cylinder six. I would start with a smoke check of the intake system. Smoke machines are realatively cheap, and you'll be using it again.


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