Speedo issues

[Jasper Gilder]

How are th etank sender and the speedo sender linked? When I'm driving and stop I get a fuel sender error message which stops as I drive off. When the ambient temp is over 15C and I've been going for an hour or more I get the message for a second while driving and the speedo packs up. After a while it jerks into life again.

Seems to me that as the speedo and tank wiring are at the back of the car there may be a clash somewhere?

[NWTony]

I'm no expert but as a T350 owner I'm going to say dash or dash ECU. Check all the connections and whathaveyou and if that doesn't solve it, send both the Paul Smith.