Speedometer Blip

So hooked up my new speedo to my military t18.

The needle just jumps back and forth from 0-10..

I hooked up a cordless drill to the cable to test the speedo, it works fine.. so problem must be in the t18

Could it just be as simple as a new speedo gear?


is it a simple job?

 

speedometer drive is on rear of transfercase . do you have cable bent too tight

 

If the cable is failing or lacking lube this will happen. Pull it out and try greasing it.

Or if the inner core is slightly too long and binding. See if loosening the top nut slightly changes anything.

 

This,

I just undid the cable at the back of the speedometer and re-greased the cable as it went back in. It fixed my jumping speedo problem.

 

opps misread the post

waiting to hear from the OP

 

So Does the original poster aekdbbop still have a problem?

 

I think we talked about this problem a few years ago and the cause was too long speedo cable, the inner part. The cure was to cut about 1/8 " off of one end.

 

I havent had the chance to look at it again.. I will grease it up some, but it would be surprising to me that would be it, because it works on the cordless drill fine..

 

The length issue would only manifest when the cable nuts are screwed in tight.

 

I mentioned this to a friend that replaced the csble on his '76 CJ5. The speedo didn't work. He cut an eighth of an inch off the inner cable. It worked better, cut another 1/8 off and it works fine.

 

Same problem with mine left the nut loose would work for awhile finally decide to put the Speed Hut speedometer in and haven't had a problem since plus its accurate no matter what size tires I choose to run although it's pricey

 

ha, that is cool.. but costs almost what i paid for the jeep!

 

And more than I paid for every speeding ticket I've ever had or ever would have.

 

Mine have been now for 2 years and haven't had a bit of trouble with them plus lifetime guarantee and made in the USA

 

Well, the nut at the speedometer was pretty loose already.. should i try at the TC?

 

OK so finally got around to trying it out. Removed the cable and greased it. Cut 1/8" or so of the square end at the cluster side. Also was sure not to over tighten the nuts.

Now it blips up to a higher speed on the cluster, and a bit faster..

Before it was going from 0-20-0-20-0.. Now it's 0-30-0-30-0...

Am I getting closer out further away from a fix?