sierra cosworth 4x4 speedo cable

[Russ 6334]

hi all, just picked up a sierra cosworth 4x4 K plate with 69k miles!

 

driving it down the motorway the speedo was fine then jumped around a bit and hit zero, i suspect the cable is loose or snapped etc, anyone know where it is in the gearbox?

 

thanks

 

 

[Frembrit]

Never had a Cosworth but had a 1990 Sapphire.

You should be able to find where it goes through the bulkhead to the speedo, just follow it down to the gearbox. Probably worth checking that it hasn't come loose from the back of the speedo too.

[Fishysw2]

I also have a 4x4 sierra sapphire Cosworth

check out chrisfix on YouTube 

he has many techniques on how to change wiring and check if it is broken

[Frostie2RTR]

The speedo cable runs through the bulkhead, left of the fusebox, across to the rear of the engine across the plastics your engine loom is attached to & drops down the left hand side of the engine. Here it screws into the left drive shaft through a worm drive to run the speedo. I can get pics if needed. Neil