You might want to replace your VSS (Vehicle Speed Sensor)
Check this out:
http://autorepair.about.com/library/faqs/bl022i.htm
speed sensor issue
There is no cable its electronic speed sensor
To replace this sensor you have to start by removing the air intake tube from the air filter to the throttle body.Then locate the bottom radiator hose.Look to the left on the trans axle,the sensor is on the trans almost under the throttle body.It has a three or four wire plug going to it.You need a 10mm socket and some luck.Take the two bolts out pull the sensor out make sure you get the little "shaft"(looks like the end of a speedometer cable).Replace the sensor.Instlation is revesal of removal.This will take care of the speedometer jumping around or not working at all.
I'm not too sure about the 1994 Honda accord because i don't have one myself. However, in most cars the speedometer sensor is located on the transmission, close to the point of engagement between the transmission and the front axle. The speedometer is attached tho the transmission with bolt(s) depending on the car.
If the speedometer needle on a 2001 Honda Accord is going below the 0 mark and jumping the black stop needle, it may indicate a problem with the speedometer mechanism or the vehicle's speed sensor. This could be due to a faulty speed sensor, a malfunctioning speedometer gauge, or wiring issues. In some cases, the instrument cluster itself may need repair or replacement. It's advisable to have the vehicle inspected by a professional to diagnose and fix the issue.
Since you replaced the sensor, and the speedometer still isn't working it is possible that you will need to replace the speedometer cable. Check the cable first to be sure that it is still properly connected, and if so replace the cable to see if that solves the problem.
It tells the computer how fast you're going. The data it produces is used by the speedometer and the cruise control system.
There is no speedometer cable - all is electronic. A speed sensor mounted on transaxle connects to the back of your speedometer cluster, and trasmits that way. It's not mechanical like old cars.
where is speedometer sensor on 2004 avalanche
The speedometer is a part that commonly fails on the 1994-1997 Accord. Buy a used cluster on eBay for about $80 from a reputable seller, and swap it yourself. The wiring on your car is probably fine, as well as the speed sensor on the transmission.
In a 1994 Honda Accord, the speedometer cable connects to the transmission at the transmission case, specifically at the vehicle speed sensor (VSS) location. The cable is typically threaded into the VSS, which translates the vehicle's speed for the speedometer. Be sure to check for any retaining clips or screws that may need to be removed for disconnection.
It doesn't have one. The speedometer is electrically operated with a pulse signal from the VSS (vehicle speed sensor) which is located on top of the transmission below the rear end of the lower radiator hose.