Speedometer everything works on it except the needle wont leave o speed

If your car isn't moving, the speedometer wont work. Make sure you are moving.

Seriously, a little more info would be nice.....but to start with, the speedometer cable is connected to the back of the speedometer and to the transmission. Have you removed the ends to see if there is any damage? You should be able to spin the cable end on the transmission and get the speedometer to register a speed.

It could be a broken cable to the speedometer, a blown fuse, a bad speed pickup.

speedo works with speed input and output sensors

If you swapped it out for a used one and the speedometer still won't work it is most likely a bad speed sensor on the transmission or a bad electrical connection between that speed sensor and the instrument cluster.

with the needles off and the scanner set to calibrate the speedometer and all the rest of the needles need to be installed at 1/2 full range with the system on unless otherwise noticed by the scanner.

There is a vehicle speed sensor on top of the rear differential, this sensor is also for the anti-lock brakes. Sometimes you just remove it and clean it (it's magnetic) and may start working again otherwise you have to buy new. Yes, this sensor will affect the trany shifting.

dismantle your dash and start your motor your speedometer needle is installed by pressure after starting your motor gently pull your needle to remove it and then align your needle with the zero and gently push your needle back everything should be ok if something goes wrong just pm me

Common on those is the dash cluster connection itself, there is a plug on the back of it, that you pull off & i ended up using tweezers or needle nose pliers and just very slightly twisted or bent ends of the male spade (small) contacts on the cluster itself, one by one. re-attached everything & problem cured. If you just pull trim around the cluster, it will come off, then 3 or 4 screws and cluster will lift out of there, unplug harness, do as described & re-install. Let me know how you make out. Did it 2 or 3 times in my 95 neon & it cured it for a few years each time.