Speedometer sensor

Speedometer not working on my Tf where is sensor and how do you remove.

There are 2 types of speedo. Early F's had a mechanical cable drive from gearbox. Later F and TF had a speed transducer in the same place as the mechanical drive on top of the gearbox connected by signal wire to speedo.

Access in via boot. Remove engine protection grill and reach down from the middle and it unscrews from top of gearbox.

Cheers

Mark

Our Speedo needle jumps up and down - until the car gets to 60km then it's good. Any advice please? 1997 MGF Thanks in advance Dave

Usually means the speedo cable has been disconnected at one time or other.

Sometimes, preloading the cable by twisting the outer sheath around a few times before reconnecting it to the speedo stops the jittery needle.

Sometimes it's a kinked cable......check that it's routed properly.
If it's kinked bad......replace.