Hi, I'm getting a Code P0171 (Bank 1, System too lean) intermitently on my truck. I've already:
1. Changed O2 sensors (all four) with factory Denso units.
2. Checked and cleaned MAF.
3. Injectors are fine (checked and cleaned).
Now I'm told the fuel filter or the fuel pressure regulator might be to blame for the code. I went to change the fuel filter but when I go to buy it they tell me (both the dealer and the parts places) that I HAVE to buy the $650 fuel pump to get the $40 fuel filter!!!
I find that outrageous!!!
Supposedly Mitsubishi no longer carries the fuel filter by itself!!!
do any of you know of a good aftermarket fuel filter brand I can use (so I don't go through the same ordeal I went through with the O2 sensors from Bosch...)...I've seen Beck Arnley branded filter and fuel pressure regulator, but since my experience with the Bosch aftermarket O2 sensors (they don't work, we HAVE to pony up for the Denso's or were SOL) I'm a little gun shy about aftermarket parts...
Thanks!
1. Changed O2 sensors (all four) with factory Denso units.
2. Checked and cleaned MAF.
3. Injectors are fine (checked and cleaned).
Now I'm told the fuel filter or the fuel pressure regulator might be to blame for the code. I went to change the fuel filter but when I go to buy it they tell me (both the dealer and the parts places) that I HAVE to buy the $650 fuel pump to get the $40 fuel filter!!!
I find that outrageous!!!
Supposedly Mitsubishi no longer carries the fuel filter by itself!!!
do any of you know of a good aftermarket fuel filter brand I can use (so I don't go through the same ordeal I went through with the O2 sensors from Bosch...)...I've seen Beck Arnley branded filter and fuel pressure regulator, but since my experience with the Bosch aftermarket O2 sensors (they don't work, we HAVE to pony up for the Denso's or were SOL) I'm a little gun shy about aftermarket parts...
Thanks!