Lincoln 5.4 3v issues
Hello everyone. I have a 07 Lincoln Navigator with the 3v 5.4 that is having some issues. It has 115k on the odometer and have had no issues until about 6 months ago. The fuel pump went out and was replaced everything seemed good to go. Now I m getting a couple codes P1719, P0171, P0174. With the scanner my LTFT on both banks is 28 and STFT is -4 to +4 these readings stay the same at idle, 1500rpm, and 2500rpm. I can not find any vacum leak anywhere, have cleaned the MAF sensor, checked fuel pressure at idle(30psi). 02 Sensors run as follows 02S11 reads .105, 02S12 reads 0.765, 02S21 reads .105, 02S22 reads 0.745 all at idle. I removed a vacumn line and sprayed a little carb cleaner in and all 02 readings went to .8-.85 almost instantly then returned to normal a few seconds later. I am not sure what else to look for on this thing. What would be your next step? When you start the motor it can take two or three key cycles to get running, but runs smoothely once started. Power seems to be there and you can drive all day sometimes without a code. Once the code kicks in the truck goes into limp mode I assume and seems like it sticks in 2nd or 3rd gear. I work on outboards fairly often so I am mechanically inclined and have a Actron 9690 scanner. trying to avoid the 2 week wait period at the Ford dealer and a small shop locally couldnt figure out what was wrong with it.