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Superduty Gen.1 1999-2007 F250, F350, F450, F550

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  #1  
Old 10-23-2019, 02:27 PM
frizfreleng frizfreleng is offline
 
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MPG on Overhead Console wrong!

2004 F-250 6.0 diesel. Had not towed anything of weight in years. Overhead console MPG readout always stayed a little north of 16 mpg. Went on a 2 month 8K mile trip this summer pulling a 8K lb 5th wheel. Over the 2 months the readout dropped to 14.7 MPG. This did not quite jive with the odometer/fuel gauge. We have now been back almost 3 months with the 5th wheel parked. The console readout still says 14.7 MPG. Any feedback/advice is greatly appreciated.

Thanks, Friz
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Old 10-23-2019, 07:40 PM
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I'm guessing because I'm not familiar with the Ford MPG calculations. On other manufacturers, the mpg calculation is cumulative, which will cause the newer numbers to be lower due to previous calculations. Is there a way to reset the mpg display to reflect more recent values?
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'78 F-150 Lariat

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Old 10-24-2019, 11:03 AM
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Originally Posted by fatherdoug View Post
I'm guessing because I'm not familiar with the Ford MPG calculations. On other manufacturers, the mpg calculation is cumulative, which will cause the newer numbers to be lower due to previous calculations. Is there a way to reset the mpg display to reflect more recent values?
That is what I was hoping to find out - reset.

Little bit of egg on face - 2 buttons on the console: MODE and E/M. Looking more closely at the 14.7 display I see it says 14.7 MPG. If I hold the EM button for a few seconds and release the display changes to 16 L/100 KM. So, my bad. Kind of ass backward. One measures how far you go on a certain volume (gallon). The other measures how much volume (liters) you use over a given distance. So I am not sure the thing has ever worked.

Later: Someone sent me a link to the "Owners Guide" (300 pages) which I did not have. There is a reset procedure. Will give it a try.

Thanks for your response, Friz
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Old 10-24-2019, 09:56 PM
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Glad to hear!
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!
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Old 10-26-2019, 11:58 PM
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Quote:
Originally Posted by frizfreleng View Post
That is what I was hoping to find out - reset.

Little bit of egg on face - 2 buttons on the console: MODE and E/M. Looking more closely at the 14.7 display I see it says 14.7 MPG. If I hold the EM button for a few seconds and release the display changes to 16 L/100 KM. So, my bad. Kind of ass backward. One measures how far you go on a certain volume (gallon). The other measures how much volume (liters) you use over a given distance. So I am not sure the thing has ever worked.

Later: Someone sent me a link to the "Owners Guide" (300 pages) which I did not have. There is a reset procedure. Will give it a try.

Thanks for your response, Friz
One is in imperial, the other is metric conversion equivalent. Like switching between F and Celsius.
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Old 10-27-2019, 12:05 AM
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Why would someone want to switch from Fahrenheit to Celsius?
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!
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Old 10-27-2019, 02:41 PM
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Why would someone want to switch from Fahrenheit to Celsius?
Grrrrrr.....metric.
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Old 10-28-2019, 10:13 PM
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Why would someone want to switch from Fahrenheit to Celsius?
To impress their wife or girlfriend....
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Old 11-01-2019, 11:45 AM
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Single module used in a vehicle sold in countries that use different units of measurement. Keeps the vehicle cost down, a good thing for consumers.
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