2009 Ford F150 Fuel Mileage issue
I own a 2009 Ford F150 FX4 with a 5.4L. I used to get 14L/100 km but now I am only getting on averahe 19L/100km/, sometimes worse. Had a fuel mileage test done and according to the dealer there is absoulutely nothing wrong. Because the computer does not register any faults they seem to be claiming ignorrance. There are other issues as well. When stopped at a light the transmission doesnt always want to downshift into first until I hit the gas which results in violent shift. It also doesnt downshift correctly on merges or even sometimes when accelerating. My tires seem to be wearing down faster than normal as well. The other day it wasnt wanting to shift into 6th when pulling the trailer(1500lb) and without the trailer on a level stretch of road. I am even having trouble when I first go to drive the truck when it is cold. I will put it in reverse or drive and it doesnt shift into gear right away, sometimes I have to hit the gas first. I have had a sit down with the service manager at the dealership and told him about the problems. We went over how its cold and I should expect the mileage to be affected. Let him know that I have been tracking the issue since July, I only warm my truck up for 3 minutes on average when its cold. I suggested there are issues that the computer is not registering and I was told that was impossible. There seems to be a tourque converter issue or some other isssue with the transmission. He wants me to bring it in and reset the computer, again, and so a fuel mileage test, again. Its always great when they reset the computer then test. HAs anybody had any similar issues or any advice?