I have a 1999 ford 150 4.2l thats saying PO144 code(bank 2 running lean). I've got a new fuel pump, fuel filter. New fuel injector assembly and the oil rings for the injectors. And theres no vacum leaks. So the shop says. I erase the code and it comes back on in 15 minutes. Whats going on.
Its running a bit better since i took it to th shop but its stilllaking in power, special off the start. And it surges sometimes
HI ¡ Check and clean your MAF sensor, also check your oxygen sensor from its corresponding bank, How are the reads of the oxygen sensor ? does it is reading low voltage or high voltage for a long period of time?
how do i clean maf
There are posts and artitcles on this site explaining how!
hows the overall running of it, idle quality etc, surging whatever, any unusual noise? we've had a few pcv elbows, lines etc collapsing, cracking, and sucking air, most times they are really hard to see and reach. check em out.