Speedo wobble

[Baron_marc]

Have a vibrating speedo needle on a sierra p100 has been like it for months and only does it intermitanly any ideas on what is causing this? many thanks

[neiljohnson]

Probably the nylon speedo drive in the gearbox, they often get chewed up over time and cause the symptoms you describe and is very easy to check. Could also be a sticky cable on a vehicle of that age.
Be warned though if it keeps chewing them up it can be a problem with the bearings in the gearbox.

[Scott330ci]

neiljohnson said:

Probably the nylon speedo drive in the gearbox, they often get chewed up over time and cause the symptoms you describe and is very easy to check. Could also be a sticky cable on a vehicle of that age.
Be warned though if it keeps chewing them up it can be a problem with the bearings in the gearbox.

How easy are they to change - its incredibly annoying?

[neiljohnson]

Scott330ci said:

neiljohnson said:

Probably the nylon speedo drive in the gearbox, they often get chewed up over time and cause the symptoms you describe and is very easy to check. Could also be a sticky cable on a vehicle of that age.
Be warned though if it keeps chewing them up it can be a problem with the bearings in the gearbox.

How easy are they to change - its incredibly annoying?

Very easy 10 min job on a ramp probably 20 on the floor just pop the speedo cable out and you will see it held in by 1 bolt iirc