Erratic speedo

06-17-2007, 04:28 PM
Hi all

I have a daewoo lanos, september 2002.

It has an erratic speedo when driving and also whilst car is stationary.
It can jump from 20mph to 50mph as an example.
I have replaced, speedo head, wiriing from speedo head to gearbox, gearbox sender unit.
Does anyone have any ideas at all?

Many thanks,

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