BigDog1989

2001 ford f150 4.6 xlt supercrew v8 triton I have been getting rich codes on both banks and I have replaced sparkplugs with motorcraft platinum replaced the upper and lower intake manifold gaskets,egr,fuelpump,fuel filter,fuel tank pressure sensor,maf sensor,intake air temperature sensor,fuel injectors with refurbished original 556's all the hoses valve cover gaskets I don't know what more it can be?

Here are some readings that may help

Johnny Paycheck

Holy firing the random parts cannon!

One thing you missed or didn’t mention: There is a hose behind the intake that usually gets a split in it and collapses in at the elbow. That will trip both banks going lean.

Man, you did a lot that had nothing to do with this.

Jimboy

So was (is) your intake air temperature actually negative 11.2 degrees F? If your real temperature was higher, say 20 degrees and the computer thinks its negative 11.2 degrees F you will be running very rich, I think.

BareBonesXL

Those fuel trims look okay. You shouldn't have any codes based on fuel trims from what you're showing. About +5.5 on bank 1 and -7 on bank 2.

I looked back at some of your old threads and you never supplied the actual code numbers.

I would guess that the red color on your scanner indicates a parameter that is out of expected range? The only red ones are intake air temperature, as mentioned, and one second sensor (after the catalytic converter) on Bank 1. Looks like a flaky temperature sensor (intake air temperature is not a super-critical parameter for the PCM), and a catalytic converter that might not be up to par.

Post the actual codes and the freeze-frame data. The freeze-frame data will show what was happening when the codes set.