So my speedo quit working when I put my SYE on. I pulled it out and tried to refasten it and what not but to no avail. When I first drove it around after the Speedo worked a little first over 15mph then only over 20-25mph now not at all. Just seeing if anyone else had the same problem and figured it out.

 

Also it's a 2000 Cherokee 4.5in lift running 33's if that matters

 

You probably didnt connect the plug all the way so when you got up to speed it fell off or something check to see if its still plugged in

 

Did they still use a speedo gear in 2000 or go hall sensor? I know with the speedo gears you needed to index it so that it meshed properly. They are made offset like a cam from the factory so you could change speedo gear sizes to correct MPH.

 

I have an 01 and my speedos off by like 5 mph i dont bother buying that extra piece

 

Its a little green gear in the tcase but its hooked up to a wire thats probably what got disconnected in his situation

 

I'm not talking about buying the bigger speedo gear. The stock speedo gear assembly can be indexed to 4 positions. Each position moves the speedo gear closer to or further from the main shaft to accommodate a smaller or bigger speedo gear.