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Old 07-07-2011, 10:29 PM   #10 (permalink)
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Quote:
Originally Posted by mekanic View Post
And the speedo should be off as a percentage ,...as long as it is on zero when the vehicle is stopped.
So the faster you go the more it is off/ the slower you go the less it is off.
at least that is the way that 99.9% of speedos that are off behave.
If it in cable driven you can usually buy a different gear for it.
If my calculations are correct you should be about the same amount (8% high) in your MPG figures IF the odometer is off by the same amount.
Look for a speedo gear with 8% more teeth to correct the speedo.
I would still calibrate the odometer by using mile markers on the Interstate for 50 miles. Your solution is old school when they had cable drives and you could change the gear, or go into the speedo head and change the spring tension.

The odometer is a revolution counter and could be right on even when the speedometer is way off. Easiest solution would be to confirm its accuracy. Say it reads 49 miles in 50 measured by mile markers, then you know its off by 2%.

Fairly sure the OPs 2000 Honda has no speedo cable, or gear.

regards
Mech
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