CLIO DIESEL SPEED

I just bought a Diesel Clio What is the maximum speed of this car? Another: The speedometer is disconnected when the car reaches the normal operating temperature Can anyone help me with these issues? Of course, thanks!

How is it disconnected? Doesn't the speed mark you?

The speedometer works until the car reaches the normal operating temperature, at that time the needle literally falls, it is very rare ...

That problem is purely electric unvents a land in poor condition or a false land when the cacble check that does not touch any cable and some part that is hot, if you do not solve it to the electric.

Yes, I also think it is electric, perhaps related to the velocimeter collector. The strange thing is the temperature. They told me that low temperatures sometimes interfere with electronic captors, maybe it is. Today, which was a little more temperate, the speedometer walked. Anyway I will have to finish in a good electrician. Anyway thank you very much.