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Old 07-08-2006, 07:25 PM   #1
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Default spedo reading wrong

hey all changed my car to manual and now my spedo is out i sit on the freeway saying im doin about 85 90 when im staying with everyone else at 100, the fuel economy doesnt seem that great but i sopose if the spedo is out the distance will be too? any way how do you fix this?

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Old 07-08-2006, 09:35 PM   #2
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change the speedo drive gear a $15 plastic gear in your extension housing.
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Old 08-08-2006, 02:48 PM   #3
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where do i get one of these from and i asume your talking about the gearbox extension housing where the spedo cable goes in. what gear size or type do i have to get thanks
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Old 08-08-2006, 06:47 PM   #4
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We are in the AU forum AU falcons dont have speedo cables. Its all electric.

There is still a speedo drive gear and a speedo transducer though.

Ford sell the gears tell me waht colour or no of teeth on your gear, how much faster or slower you want the speedo to read and you get the gear to suit.
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Old 09-08-2006, 09:51 AM   #5
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ok thanks mate ill have to get it out and have a look at it and let you know. will the one out of my auto box that was in it work or is it different
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Old 09-08-2006, 02:14 PM   #6
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The Au Auto and manual speedo gears are all the same manual and auto.
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Old 09-08-2006, 02:18 PM   #7
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Speedo drive gears.

Here is a table of the speedo drive gears available and the change in speedo reading they make when changing from one to the other. The gears are plastic cost less than $10 and take all of 5 minutes to fit. So correcting the speedo is quick and easy if you change your gearing by an amount hey can adjust for.

ColourPart No.Teeth% Chg % Chg % Chg

BrownXE17271C20.00.00%

light GreenXE17271D21.04.76%

GreyXE17271E22.09.09%4.55%

BlackXE17271F23.013.04%8.70%4.35%
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