! change a old speed sensor for a new one in my Toyota pick-up 1992 but the speedometer still not work, somebody knows what can be wrong?

They both work off of the same cable, so I would say that you have a problem in the speedometer head itself and will need replacing or sent in for repair.

That particular model does not have a cable, it is an electronic speedometer with a speed sensor mounted in the transmission. Check all the wires coming from it, then the sensor and last check the actual gauge in the dash.Here's a link to check the speed sensor. Repair Guides Rear Wheel Anti lock Brake System Speed Sensor AutoZone... Here's the part and cost,awah... Vehicle Transmission Speed Sensor 1992 Toyota Pickup 2WD 4 Cylinders 2...

Change the speed sensor if you have the electronic speedometer. If you have a cable driven speedometer, buy a new cable, and replace the old cable if it has been broken.

It's probably the gear that is bad, follow the speedometer to the transmission, the gear is at the end of the cable.

Based on your actions, it sounds like a wiring problem.
Could be a weak connection at the cluster, or the speed sensor.

You change the speedometer or just the cable?
You mean when you drive and the speedometer turn too high or low then normal?

If so. Wrong cable/or speedometer.

Mai Lor

Check wiring integrity at the speed sensor plug, and be sure that the internal gear which drives the sensor is not worn.

It sounds like the speed sensor is faulty, it is located on the right side of the transmission, and you can pick up one at Toyota.

its the speed sensor on the transmission. usually at the rear.

get new speedo cable or check both sides and see if the wheel is broken on either side