2004 F150 5.4l 4x4 Misfire Problems
#1
2004 F150 5.4l 4x4 Misfire Problems
My truck just recently started misfire so I think. As im driving down the road or highway it starts to jerk badly after the 3rd gear. It happens when I go to accelerate. I can let off the gas and than give it more gas and it works fine but its now happening alot more and I can feel it losing power. If anyone has had this problem can you please help me out. Oh yeah I just took it to autozone and they checked the codes and it was P0171 & P0304 something about MAF sensor and Cyl 4 misfire.
#3
Senior Member
The mass air flow sensor tells the computer how much air is passing through the air cleaner so it can adjust the fuel flow and mixture. It's located just past the air cleaner on the side of the plastic housing. If it's dirty it will run a lean mixture in the motor. Your P0171 is a right bank lean condition. Get a can of MAF cleaner and follow the instructions carefully. DO NOT touch it in any way and don't use an air chuck to blow it off. Good luck