Overhead comp. MPG?
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More Turbo
Joined: Nov 2004
Posts: 515
Likes: 6
From: Denver, NC
Overhead comp. MPG?
What is the best way to check the over head computer MPG for being acurate? I know its not a true average but it doesn't change and has gone down. Last year I was averaging 1103 MPG as per the comp. now all it ever reads is 9.2. Want to check it out and calibrate it if possible. It is in a 04 F250 scab SB with 5.4, 4.10 and 265/75/16. Thanks
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
You can reset it at each fill up (press both buttons at the same time) and then compare when you fill up again by dividing the gallons used to fill up into the miles driven.
Your actaul MPG may vary from the displayed because the computer doesn't average the idle time (0 mpg) into the equation.
Your actaul MPG may vary from the displayed because the computer doesn't average the idle time (0 mpg) into the equation.
Senior User
Joined: Apr 2007
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Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
I just always figured that averaging 0's must confuse the computer. There's got to be some reason why it always seems to be off...besides operator error when comparing.
