p0171 p0174

Hi everyone, I have been dealing with a check engine light pushing P0171 and P0174 codes. I ended up replacing the PCV valve and the EGR valve but haven't been able to resolve it. I made a homemade smoke machine and put it through my engine and discovered smoke coming out of the locations...

Hey Everyone, It's been a while since I was able to post on this forum, but I hope everyone is well. I know that this is a topic that has been discussed at length, and I've done a ton of research on the matter but have come up with nothing that worked in my case, thus far. Basically I have a...

Ford explorer sport track 2001 90k miles. The check engine light comes on after the engine has labored hard as in going up hill. I replaced the egr differential sensor as I got a code for that. for the p0171 & p0174 I checked several times for a vac leak and none were found ( idles smooth and...

I would appreciate any feedback on this issue. I have a 1997 4.0 OHV that is throwing P0171 and P0174 codes, and the scan tool data is unusual. Looking at OBD live data, the STFT and LTFT both show -100.0 for bank 1 and 2. Not changing with time or RPM. Also, O2 sensors are registering 0V...

Hi all, I'm quite new here, so I apologize if I'm not posting on the right place. That begin said, I hope somebody can help me out. The truck is an explorer 98, V6, vin X. I've had this codes since FOREVER, but I finally want to get them fixed. When it comes to drive, the truck is just...