I have same codes P0174 & P0171 Don't know where to look?

After Driving car for a week the P0171 & P0174 Codes came back I already cleaned the MAF & thought i found the vacuum leak Is it possible the oil seperator is clogged & causing these codes along with the PCV Valve filter. I am not sure where the PCV Valve filter is there is a ribbed plastic line that goes from the pcv valve to a black housing with a round lid on it attached to the firewall near the passenger side behind the coil pack & not sure where the oil sepertor is? i have only had the car acouple of months not real fammiliar with where every thing is & my repair manual seems to be a bit sketchy on the locations here are the readings from the code reader
fuel sys 1 CL
calc load %29.41
ect(c) 67
stft B1 % 26.56
ltft B1 %16.41
stft B2 %25.00
ltft B2 %20.31
eng rpm 867
speed km/h 22
Any help would be appreciated Thanks
Also if my fans are running all the time will this affect it still working on the electrical on the fan problem its on the ground side from the pcm had to direct ground the fans, circuit was not closing on the ground from the pcm

Not 100% positive but every vehicle I've ever worked on the pcv valve is on or very close to the valve cover on the opposite side from the oil filler perhaps that will help you. My current vehicle 2000 Ford Ranger the pcv valve is tucked between intake manifold and driver side valve cover toward the back of the engine.

Those codes are not always a vaccum leak either! Where to look is in the forums for all the possible causes of that dtc!

I think i got it was leaking vacuum around the two hard plastic lines on top of the intake manifold just overlooked them thanks