I have a 2001 wrangler, the speedo is reading that I'm going 15 mph faster. Haven't really checked anything yet, just wanted to get a general idea of where to start. It does have a 3" rough country lift and tire size is 31x10.5xr15. Not sure if it just needs recalibrate due to the lift and tire size.
Speedometer reading incorrect
- Thread starter jcborch
- Start date
You need to change the speedo gear in your Transfer Case to the correct number of teeth to accommodate the larger than stock tire size and gear ratio. It’s an easy 5 min swap.
https://www.quadratec.com/c/reference/jeep-speedometer-gear-tooth-chart
Here's how to swap the speedometer gear. It only takes a few minutes and you only need a 1/2" wrench. If the speedometer doesn't work after replacing the gear you probably just didn't rotate the speedometer gear housing far enough so the new smaller diameter speedometer gear meshes with its pinion gear located underneath it inside the transfer case. http://www.4x4xplor.com/speedo.html
Thank you for the help. I will let ya know how it goes. It might be a moment till I can get this done but I will post back as soon as I can
https://www.yellr.com/
Best money I spent. After having gears strip out due to SYE tolerances and #39 and higher gears being too large of a diameter to simply insert straight in, I bought the calibrator. The gear charts are not that accurate and you will be lucky to get it within a few mph. Using an Iphone GPS program, you can get it exact. And changing wheels is simple to reprogram.
Best money I spent. After having gears strip out due to SYE tolerances and #39 and higher gears being too large of a diameter to simply insert straight in, I bought the calibrator. The gear charts are not that accurate and you will be lucky to get it within a few mph. Using an Iphone GPS program, you can get it exact. And changing wheels is simple to reprogram.
I'm still waiting.
He’s going too fast to check back in, at least according to the speedometer!
I'm still waiting.
Unfortunately it's something that I have to put on hold for a moment, have to get ball joints done on my Liberty first, she got jealous of project "Chiqui"
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