nick_n_ii

I have a '91 XJ that the Speedo isn't working in.

I've replaced the speed sensor on the t-case and the gage cluster both with ones that came off a Jeep they worked on.

Any idea's?

mark's91-XJ

got power? hows the wires? what happened did i just quit

nick_n_ii

I just got the Jeep 1 week ago and it didn't work from that time.

Wires all look good.

Does the speedo have a fuse?

89Laredo

the instrument cluster does...
17 - 7.5 Amp (Violet)
Instrument Cluster Guages, Headlamp Delay Module, Chime
Module, Overhead Console.

xjmarc

If it's an 89 it should be a mechanical speedo. When you replaced the gear in the t-case there are several positions you can put it in depending on tooth count. You may not have it making contact. You have to spin the housing till it makes contact and bolt it in.

89Laredo

he says in the first post its a 91, or I would of said exactly the same thing you just did.

xjmarc

Sorry his sig says 89 and my 91 is mechanical as well. Plus my 97's t-case is made the same way and can be off and then no speedo.

Bro-quo

Yup. there are numerical values on the part of the sensor sticking out of the tailshaft housing. These are the clocking positions for the different tooth counts, as the sensors are used on many differently geared applications. if you have 42 teeth and you see 40-46 printed on the sensor, clock the housing so the tab that holds the sensor into the tailshaft housing is pointing to the area where the numbers are located, as is viewed straight on from the rear of the vehicle.

nick_n_ii

I'll check the sensor again but. Both are same tooth count.

And Yes this is a '91 it's replacing the '89 that is in my sig.

IS the gear and shaft in the sensor suppose to be held in by anything? Both mine just fall out when you pull the sensor.

xjmarc

Yes it has a bracket the holds it in with a bolt. That is prob your issue. The gear has spun around and isn't making contact.

mark's91-XJ

no it just rides in a hole in the tc. be-careful you can lose it in there

bamfxj

i had an 89, and i replaced the cluster and the tcase sensor as well, it ended up being that the cable was broke about 10inches down from the cluster. when its off, you can just pull the top part out and you will know if that is it or not.

xjmarc

The gear does but the cable that attaches to it is bolted down.

ematuzsan

I have the same problem. How do I change the speed sensor? I am not sure where it is even located.