P0172-system too rich (bank 2)
P0174-system too lean (bank 1)

not really sure what this means could be it a sensor or somthig

 

maybe o2's

 

k

 

Thats what im thinking. Better find out for sure. With your o2s gone shes gonna drink gas like crazy!

 

ya she drinks the gas alright

 

thats cause ur also double lifted on 35s with the wrong gearing lol

 

didnt drink as much gas before the light came on.. came on right after the truck started to run a little hot the last time i was at rancho

 

Likely 02 sensors or a strange fuel control problem. With one side running rich and the other lean, that's pretty strange.

Bob will probably have a more detailed response. It's not likely to be the MAF, as it affects both sides equally and in the same direction generally. It can be O2 sensors, injectors, PCM, ignition and so on that cause that. If you're not getting misfire codes, that's probably pointing to the 02 sensors I think.

 

I would suspect the O2 sensors on one of the exhaust manifolds. Check em both or just replace em both. It's prolly a good idea anyway.