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post #1 of 26 (permalink) Old 01-25-2014, 05:04 PM Thread Starter
 
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Cool Inaccurate odometer

Hey all, i discovered an issue with my odometer today. i drove thru a measured km section on the highway and my odo read 3 km on a 5 km test section. As far as i know the drivetrain is completely stock. the only thing i have changed is the gauge cluster itself, swapped one with a tach in it also from a 97 . tires on it now are stock size tho i do run a larger tire in the summer but still on 16in. rims. stock is 235/70r-16, summer's are 265/75r-16. Did going larger confuse the computer? the speedo seems to be accurate so i am a little confused as to why there is such a difference in the odo. It does explain why my mileage seemed to be so bad. Any ideas? thanks..

1997 f150 xl, 4.2l , m5od , short box,
bone stock.... for now
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post #2 of 26 (permalink) Old 01-25-2014, 06:06 PM
 
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Seeing that you get 3km's on a 5km stretch, add in the fact that you changed the cluster, I would think that the cluster is believing you are in miles per hour. Do you know if the cluster came from an American truck?


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post #3 of 26 (permalink) Old 01-25-2014, 06:55 PM
 
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Did you get the cluster out of a truck with the same gear ratio?

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post #4 of 26 (permalink) Old 01-25-2014, 07:39 PM Thread Starter
 
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The cluster came out of a truck that had a v-8 & auto trans but not sure of gear ratio. the american angle is making sense because the mph is the predominant numbers on the gauge face. is there a way to change it to reading km? Great suggestions btw, never would have thought of that.

1997 f150 xl, 4.2l , m5od , short box,
bone stock.... for now
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post #5 of 26 (permalink) Old 01-25-2014, 07:44 PM
 
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I know you can change from mph to kph (or the other way) in my super duty pretty easy. But your truck, I'm not sure...and I forget how to do it on mine anyway! lol.


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post #6 of 26 (permalink) Old 01-25-2014, 08:02 PM Thread Starter
 
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well now that i know it is in mph i can still figure out what my actual mileage is and be able to calculate gas mileage accurately. if i switch to km now i will really confuse the shit out of myself!

1997 f150 xl, 4.2l , m5od , short box,
bone stock.... for now
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post #7 of 26 (permalink) Old 01-25-2014, 08:46 PM
 
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haha


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post #8 of 26 (permalink) Old 01-26-2014, 06:38 AM
 
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Which gallon will you use to calculate?

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post #9 of 26 (permalink) Old 01-26-2014, 11:37 AM Thread Starter
 
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huh?

1997 f150 xl, 4.2l , m5od , short box,
bone stock.... for now
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post #10 of 26 (permalink) Old 01-26-2014, 11:47 AM
 
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Quote:
Originally Posted by destructicon View Post
which gallon will you use to calculate?
3.78

hopefully your not doing 60mph in a 60 km/h zone.



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