Gas Mileage
#1
#2
#9
#12
also running a higher octane fuel wont do anything. the truck was born using regular and should continue to use regular (87). Unless re-flashed for running a different octane fuel, it shouldn't be changed.
#13
Join Date: Apr 2007
Location: Placentia, CA
Posts: 927
Likes: 0
Received 0 Likes
on
0 Posts
Edit: Oops my bad I read way too fast. I have a 91 tune, so yes he is right using higher octane won't do anything for you
#14
#19
Wow, it's strange that a code isn't being thrown for such poor gas mileage. The only other thing that popped into my head was checking the Idle Air Control Valve or the O2 sensor; but you don't seem to have any problems with the Idle and you are not throwing any codes....Good Luck Man, we are here to help, keep us updated.
#23
what brand of spark plugs did you install
i would have replaced them with the motorcraft iridium 1`s
this is what i would do in sequence
1/ clean throttle body
2/ clean idle air controller ( port )
3/ replace spark plugs with motorcraft iridium 1`s
4 / replace all of the o2 sensors
5 / replace the ignition coil ( they do deteriorate over time from cycling and engine heat )
6 / fill up your fuel tank with 94 octane fuel and 2 cans of seafoam and run that through your engine
i would have replaced them with the motorcraft iridium 1`s
this is what i would do in sequence
1/ clean throttle body
2/ clean idle air controller ( port )
3/ replace spark plugs with motorcraft iridium 1`s
4 / replace all of the o2 sensors
5 / replace the ignition coil ( they do deteriorate over time from cycling and engine heat )
6 / fill up your fuel tank with 94 octane fuel and 2 cans of seafoam and run that through your engine
Last edited by cheese_man; 01-30-2015 at 08:07 PM.
Thread
Thread Starter
Forum
Replies
Last Post