Q: how do i fix "system is too lean" P0171 on my acura csx?
i have a short ram intake and i kno that this is causing the problem i just want to know how to correct it so the check engine light doesn't come on...i have already hooked up my car to an OBD reader and cleared the code but then after a while it comes back with the same P0171. PLEASE HELP!!
A: The ram intake should not be the problem. Sounds like a fuel delivery problem. Check your fuel pressure. If it is lower then it should be it could be the regulator or possible a pump problem. Also make sure your battery is showing 13.5 volts when running. If it is less, this would make the fuel pump not work correctly.