what are the reasons a speedo would stop working?

[colbystephens]

mine's a mechanical speedo. i got in the truck the other day and the speedo just didn't work. doesn't even bounce. i checked the connection at the t-case and i checked the connection at the gauge. only odd thing about this speedo is that it's got a gear-correction fitting on the t-case. could that go bad? i didn't pull it off and plug the speedo directly into the t-case to check.

what else should i look at?

 

[thatK30guy]

Replace the cable. Its very, very easy and fairly cheap. I've replaced quite a few and they were always averaging $15.

 

[colbystephens]

that's kinda what i figured - that the cable broke inside the housing. bummer. oh well.

 

[dleroy43]

Did you put it in drive??

 

[colbystephens]

yessir.

 

[Desert Rat]

One thing that happened to me was that when I put in my doubler, I needed a longer cable. I bought a longer one and installed it but it did not work at all. I fiddled with it a bunch and after pulling my hair out, I found out that what I had done was to push it in too far on the back of the speedo. The older type have a clip and they just push onto the small column that protrudes from the back of the speedo. I pulled it out slightly, and that fixed it completely. A small minor adjustment but it made all the difference.

 

[colbystephens]

cool. i'll try that. i've been pushing on it to make sure it's seated properly, so perhaps i've over done it. if that doesn't work, i'll get another one. $20 at napa, we'll see what they want for a used one at the wrecking yard down the road.

 

[dhcomp]

cool. i'll try that. i've been pushing on it to make sure it's seated properly, so perhaps i've over done it. if that doesn't work, i'll get another one. $20 at napa, we'll see what they want for a used one at the wrecking yard down the road.

For a cheap item, that is such a wear/lubrication battle all the time, why would you waste your time with a used one? Certain things are better purchased new, and done right the first time.

 

[colbystephens]

just cause i want to save a couple bucks. if it's $10 or less at the wrecking yard, i may as well. i drive this truck only about 20 miles or so each month, usually, with the exception of a trip every few months. now that it's summer, i'll do more wheeling, so a bit more. anyway, point is, i drive it so rarely that i'm happy to risk a used speedo cable since it's no big deal. 5 minutes under the truck to replace it and i'm done.

 

[protechk5]

What t case is it? I know with my 205, the plastic gear blew out in mine.

 

[thatK30guy]

For a cheap item, that is such a wear/lubrication battle all the time, why would you waste your time with a used one? Certain things are better purchased new, and done right the first time.

Ditto!

 

[colbystephens]

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