Speedometer Problems

[peterd5411]

I have a 95' T100 with about 160,000 miles. A couple weeks back the speedometer was not reading correctly. By the end of the day it wasn't moving at all. Since then it has worked sporadically. Usually moving between 5 and 20mph, occasionally higher than that and several times reading true for a complete 10 (or so) mile trip. I'm not sure if there is a typical cable with a gear in the tranny but I couldn't find any useful info or diagrams in my aftermarket manual (Chilton's?). Any advice/input on what might be the most common trouble spots would be greatly appreciated. Thanks.

[Robin25113]

The T-100 uses a std speedo cable from the trans. $75 if you need one from Toyota. The instrument cluster side uses an electronic pick-up at the back of the speedo. The speedo is electric. $250 for the whole cluster from Toyota.
I changed my cable (cheaper) and reduced my jumping of the needle. The new cluster would fix the rest but too pricey for me right now.

[peterd5411]

Thanks for the info. That will at least put me in the right direction. Pete