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Changing speedometer readings


47papa65

Well-Known Member
Joined
Apr 11, 2010
Messages
57
Vehicle Year
1994 mazda b400
Transmission
Automatic
i just replaced my rear end . I went from 3.55 gears to 3.08 and now my speedometer is off. How do I fix this? Thanks.
 
I believe for a 1994 will have to take the little plastic gear that controls that out of the transmission to see what color it is, the color coincides to a number of teeth, you will then have to use a calculator you can find on this site under tech articles find the new number of teeth you need to correct your speedometer and order it. I believe it is called speedometer worm gear or something like that.
 

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