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Since the 4.8-6.0 swap it runs lean in the driver side. what could cause this or what should i look for? It runs around 80 millivolts only on driver side. I put new o2 sensors and checked for exhaust leaks, cleaned injectors and ran some seafoam in it. Thanks for any help it is greatly appreciated.
a bad or broken ground wire.
where should I look at for the ground wire
on the back of the block, driver side head and next to the oil pressure sending unit.
vacuum leak?
the only ground i found was the one to the block where is the one for the head located on the back side of it or what and no vac leaks
Any way that code could be related or have anything to do with the MAF?
Check for any exhaust leaks, if it has an exhaust leak, even a small one on the driverside manifold or anywhere else between the head and the left side o2 sensor, the leak not only blows exhaust out but also sucks air in causing the o2 on that bank to pick up the extra air which will set the bank 1 system lean code, also if you still have cats and did the 4.8 to 6.0 swap without the tune to correct for the extra cubic inches, the engine will run lean causing the cats to fail which will melt them, a melted or restricted right side cat can cause the left bank to run lean, no exhaust getting out means that the motor gets less fuel injector pulsewidth, but since the right cat could be restricted it would never set a lean code, only the left on would, those are some things you should check, if you need any extra info or diag let me know, I sure will be happy to be of some help....