Hello All,
I have a 2001 4.4 and I just did the crancase vent hoses , cleared the codes and now the SES light came back on with a p0171 code.system lean bank 1.
I have just done the MAF 3 months ago , and the cam position sensor on the intake side as well. I only have 35k miles on the X.
Could it be my fuel filter?
I have a AFE intake and that is it.
Thanks for any help!!!