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Hi Has anyone else suffered from a speedo that just drops back to the bottom and fails to register any speed until the car is restarted? when this happens the fuel economy lights stop working also. any help on the cause and how to cure would be appreciated
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Hi kb and welcome to Saabscene

From what you describe it sounds very much like the speedo/EDU are losing the speed signal. The speedo is electrically rather than mechanically driven.

It may just be a bad connection on the back of the speedo unit- it could be worth removing the connectors (you need to remove the dash top to do this), cleaning them and replacing to see if that cures the problem. If not, it is probably a faulty sender unit.
 
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