Speedo and Odometer both stop working

[tbville]

I went to go for a drive the other day in my 84 Carrera and the Speedo cluster was not working at all.

I have read all about the gears wearing out but that is always just for the odometer, I bought the car a year ago and the pervious owner had replaced the gear in the cluster, so I am not sure where to go next.

Any ideas?

[timmy2]

Check the connectors in the shift coupler area in the tunnel between the rear seat floor under the cover. One may have come loose.

[petercory]

More than likely a capacitor and/or diode has died. The capacitors should have been replaced along with the odometer gear(s).

[Joe Bob]

Put it in another 911. See if it works. If not it's the gauge. Needs an overhaul. If it DOES work it's your wiring.

[tbville]

speed transmitter went out and after that the speedo did not work, so I sent it to NH Speedo.

[tbville]

speedo came back and everything is back to working.