JK-Nate

Hey guys, I just bought my JKU the other day and it came with 35 in tires and about a 3.5-4 in suspension lift on it and my speedometer is not working. Any suggestions as to why?? Appreciate anything that you guys may know

sclan

When you say not working do you mean it is displaying the wrong speed or is the needle not moving at all.

If it is giving the wrong reading it is because the programming was removed. It needs to be calibrated with a programmer like Superchips or Procal.

Heck I would take it back to the dealer and tell them that something is wrong. If they mention you need a programmer tell them that they need to provide one

JK-Nate

Yeah I'm trying to get them to fix it now and they mentioned something about it needed a new gear of some sort. Hey do you know how I could get a joforum.com decal?

mkjeep

Speedo gears went out with the TJ. It's computer controlled now.

Stickers...
https://www.jk-forum.com/forums/foru...oject-JK-Store

Unless you really want joforum, which can either be a reigious gaming site or a legshow site sticker .

ronjenx

Ask them if it's the speedometer driveshaft gear.

JK-Nate

Thanks, is the speedometer driveshaft gear a big deal, hoping its not so they don't give me a hard time

RedOffRoad

make sure while your there they top off the turn signal and break light fluid

ronjenx

There is no such thing on the JK. It would be a test of their honesty.

Lancejk

Subscribed. You have to tell us what they say about the driveshaft gear. Lol so awesome.

Prime8

Interesting... I know when it went out in my XJ it was signal that the plastic speedo gear in my transfer case burnt up due to low fluid in the case... Didn't know that at the time though and had to replace the transfer case when the rest burnt up... I can't imagine that they still use a gear though... Gotta be electronic. Check your fuses maybe? I'm horrible with electrical stuff...