Fule mileage
#1
Junior Member
Thread Starter
Fule mileage
Just recently had both plugs and coil packs replaced. Plus a new napa computer all done by the dealer. I'm disappointed in the MPGs I'm getting. Now mind you I know I'm not looking for 30mpg out of a 5.4 but I used to get 17 to 19 on the Hwy and I'm lucky to get 15 right now. Just curious as to what might I look at doing. I did change the fuel filter and cleaned the MAS and throttle body.
#2
Four wheel drive?
Super Crew?
Winter gas blend?
Change to more aggressive/larger tires?
Super Crew?
Winter gas blend?
Change to more aggressive/larger tires?
#3
Moderator
My 07 4x4 SCrew had a miss on a couple cylinders. I changed out the boots and springs on them and a new coil on one. My fuel mileage went down quite a bit. I ran some injector cleaner through it and it has improved a little bit. Im attributing mine to the winter blend of gas. Also how are you reading that mileage?
#7
Moderator
Did you disconnect the battery when you did the plugs, resetting the fuel mileage? If so do you do more hwy or city driving? What percentage of each would you estimate? How often did you reset your mpg on the dash before you did the plugs?
Trending Topics
#8
Honestly....that sounds about right.
I have a 4x4 SCREW and get 14-15 city.
17 HWY. With a slightly larger tire
I have a 4x4 SCREW and get 14-15 city.
17 HWY. With a slightly larger tire
#10
Senior Member
Just recently had both plugs and coil packs replaced. Plus a new napa computer all done by the dealer. I'm disappointed in the MPGs I'm getting. Now mind you I know I'm not looking for 30mpg out of a 5.4 but I used to get 17 to 19 on the Hwy and I'm lucky to get 15 right now. Just curious as to what might I look at doing. I did change the fuel filter and cleaned the MAS and throttle body.