Replace the speedo head assembly. It is a sealed unit, with no servicable parts. If the speedometer is working, then the cable and the speedo drive gears are working. The failure must be inside of the speedo head assembly itself.
Most likely a loose connection or bad sensor it is electronic
There is no such thing as an "odometer sensor." There is a vehicle speed sensor that is located on the output shaft housing of the transmission. That sends info to the speedometer. From there, the speedometer and the odometer are both operated internally, so if your speedo is working, but the odometer isn't, you have a problem inside the speedo head assembly.
Sounds like the speedometer cable broke.
The odometer runs on the same electronic gear driven sensor as the speedometer so if the speedometer is working and the odometer is not the problem is in the "Speed head" (speedometer unit in the dash). Mine and several others I have seen break at about 40,000 and will need replacing.
the little gear that turns the numbers is broke and the only way to fix is replace the whole speedometer.
You can not legally.
Speedometer is ran by electronic sensor on rear end. Odometer is ran from speedometer. If both don't work problem is sensor. If speedometer works sensor is okay. If speedometer works and odometer does not problem is in mechanical parts (gears) of of odometer and has to be replaced. Can get used from eBay (search for speedometer or odometer, is one unit) or take to dealer.
Six
A 1996 Chrysler Town and Country does not have a speedometer or odometer cable. That signal comes from the transmission output speed sensor.
If the speedometer works but the odometer does not work, you have to replace the worm gear on the back of the speedometer. you can buy one from: SPEEDOMETER GEARS.COM part# 10-021w 95-99 ford explorer/ranger/f-series price includes shipping inside the u.s phone # 1-800-446-2880
Worm gear is broken. Easy fix just replace worm gear .
It should be on the back of the transmission, almost directly under the throttle body. If you want to get rid of it, just unplug it, but your speedometer and odometer will stop working.