Join Date: Aug 2007
Location: Blairstown, NJ
Car: 06 OBW 2.5i auto
Feedback Score: 0 reviews
2006 Outback wagon 2.5i low fuel pressure
I have a 06 outback wagon 2.5i. Non turbo with about 147k on it which has been giving us trouble starting lately. Long crank time to start. The car also has thrown a CEL code p0171 too lean. I have done a whole series of things to try and fix this. Including checking the air supply duct, new air filter, spark plugs, clean the MAF. Cleaned the throttle body by removing it. I also changed the front a/f oxygen sensor Finally checked the fuel pressure got about 18 psi with key on and 25-28 psi while running. Spec says 49-53 psi I believe.. Don't have the book right here now. So I am running at about half. I also connected my vag com cable and saw the fuel trims going to like 10-25%.
I cannot find the fuel pressure regulator. I fear that it is part of the fuel pump.
What is the little valve bolted to the center of the intake manifold? It has an electrical connection and a fuel line in/out connected to it. I think I read it was a purge valve. I disconnected the wire to it and saw no effect. I did not check if I got any new codes to determine what the device is.
Any input is appreciated.