This has been going on for months. Speedo will jump up to the right speed and then rest at zero for a while. Over the past 3 days I've only recorded 9 miles. I'd really like it to work again. I'm almost sure its the instrument cluster, which I have a spare for. But where in hell does it get it's reading from? Considering I just did a 5spd swap and there is no speed sensor in the trans that is hooked up it would have to be the ABS system right? Not the ABS computer, already swapped that out. Also in the same system but may be unrelated, my rear diff lock fails to engage. All of this has been in non sequential order so... ABS light on with no code (Jan 2011) Speedo going on the fritz (March 2011), diff lock blinking and never engaging (July 2011) and just did the trans swap.

Any ideas? Hate to rip the dash apart to throw in the cluster if there is a simple fix.

 

that was happening in my pickup with mechanical speedo. the cluster was messed up somehow. i would think the 4runner would be electric speedo sender. gota swap that cluser out.. lucky you. no inepction in florida eh

 

Usually the spedo (speed sensor) is at the t-case housing. Check again to see if its on the t-case.

 

It was my passenger side ABS sensor. Well actually my wheel bearing to a fat on me and must have been going out for a while. The sensor is magnetic and picked up all the bearing trash. New bearing in, Tundra brake swap done for $320 in Duralast parts and the speedo has been working all day long. Only a week or so till I order Camburg UCA's and 35's