Pretty sure you have a sensor, i think the culprit may be your speed sensor, but if i were you i would first pull out the instrument cluster and inspect the electrical connections in the back and if you can, drive CAREFULLY and wiggle the connections around to see if its your cluster. If nothing happens its your speed sensor, who knows it could be an easy fix!
93 was sorta the crossover point, you could have cable or electronic.
To find out for sure, get under your truck and look.
If its 4wd the sender is in the t-case, if 2wd its in the trans.
Once you locate it and determine what you have, check it for obvious problems (loose, broken wire, etc).
With the proper info, we can tell you where to go from there.
My 93 is electrical and I also have been having issues. Seems to be an issue and a few people have posted on this site and toyotaminis- no answers yet. Not the sensor- I'm going for ground and will pull out my cluster once next weekend. Mine reads high and sometimes where I turn on a blinker it will go down to normal or sometimes go up and down. I will post what I find later.
without , more info, hard to be certain, but try the passenger side of the t-case, near or in the extension housing (rear-part) held on with one bolt, and the connector is either straight out the side or angled upwards (the connector).
The speed sensors are pricey and from my research are usually not the culprit in this case. I had it diagnosed at the dealership and in my case it is the actual guage cluster itself. Tech said the cluster has to be replaced. I have been waiting for someone to discover the magical econo solution but nothing so far. Mine has been intermittent for the past couple years doesnt like wet weather at all. I just deal with it for now cause a new cluster is pricey.
There are a few threads in the forum of folks who replaced the speed sensor under assumption and were sorely disapointed when it did not resolve the issue.
I have not torn the dash apart to get a good look but I feel that the conclusion would most likely be the same which is to replace the entire cluster. Hope this gives you some reference at least.
I have a 94 Toyota xcab 4X4. When the speedo went out, I replaced the speed sensor. That didn't fix the problem, so I replaced the instrument cluster with a used one. The speedo now works, but is off by 12 MPH. Any suggestions?
Yes, Always 12 MPH. I have to get up to 12 MPH before the needle will move off of the "0", so my 31X10.5 R15 tires should nort be a factor. Tried with 2 different speed sensors with the same result. Starting to wonder if the instrument cluster that I bought off ebay already had speedo issues. http://www.ebay.com/itm/180851724564?item=180851724564&viewitem=&vxp=mtr
anybody who reads this and has the speedo probem. mine was the cluster. i replaced it with a used one sent to advanced auto from a junkyard.
but first. dont go ripping your cluster out. your vss is alot easier to check first. jack the rear end up off the ground. have a trusted partner sit in the vehicle with it in gear and running. i had my dad sit in it with the clutch partially pressed just enough to catch and have the tires spin slowly. probe the pulsing wire. i cant remember what the color is. i believe there is 3 wires. 1 is pusle, ground, and positive i think. its beeen a long time. anyway, find the right one with a meter and a pulsating voltage shoudl show. i cant remember wat it is. but if it doesnt, ITS BAD. if it does. its prob your cluster. i heard that the capacitors burn up in them.
just my 1/2 cent....just trying to help since i have delt with it already. i dont make it a guessing game like some of these guys do. i wanna diagnose the actual problem and fix it.
oh yeah. i changed the odometer to match mine before i put it in. little tricky
I got this info for ifixit. it wouldn't let me link to it.
From what I understand, most of the failure on the Toyota's is actually the instrument cluster itself. Do go ahead and check your connector. That way at lest you know that the sensor and the harness are okay.\:" INSPECT VEHICLE SPEED SENSOR
(a) Connect the positive (+) lead from battery to terminal 1 and
negative (–) lead to terminal 2.
(b) Connect the positive (+) lead from tester to terminal 3 and
negative (–) lead to terminal 2.
(c) Revolve shaft.
(d) Check that there is voltage change from approx. 0 V to 11 V
or more between terminal 3 and 2.
HINT: The voltage change should be 4 times per each revolution
of the speed sensor shaft.
If operation is not as specified, replace the sensor.
If that should check out, you know it is not the sensor. then go ahead and check the connector to your instrument cluster
or the harness, you can check the instrument cluster using the wiring diagram.
If all those points check out okay, I definitely would repair or replace the instrument cluster. Hope this helps, good luck
I choose to go online and order the pigtail connector , and make a cable going into the car so i can hook up a supply, and test the sensor while i pull forward. I just hacked a phone cable charger and used the 5V fom that. It' produced ~ 4vdc from the sensor on and off as I drove real slow. Unfortunately it worked so now the cluster.