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Old 04-29-2011, 04:37 PM   #1
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How do I recalibrate my speedometer

It's a great day! The jeep is back on the road, the weather is nice enough to take the top off!!!

I have a 94 YJ - 4.0 5-speed - 2.5 inch OME lift and 31in tires.

I just replaced my stock axles with 4.10's and it is sooooooo wonderful with the exception of the speedometer being way off. How do I go about recalibrating this? It is nice to see the jeep doing 95mph, but it would be even better not to have to argue with the cops!!

The first right answers wins my eternal undying gratitude and my collection of naval lint!

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Old 04-29-2011, 04:45 PM   #2
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If I remember correctly (it's been YEARS since I've done this) you have to change out a cog in the transmission that is linked to your speedometer cable. That's about as much as I can recall. I just use the GPS for correct speed.

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Old 04-29-2011, 08:53 PM   #3
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here's a good chart courtesy of 4wd and crown auto
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Old 04-29-2011, 10:23 PM   #4
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look for a chart of speedometer gears. your speedo is electronic. change the gear and all is fine. it is located on the lefthand side of the transfer case. it has a three wire plug connected to it.
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