Sucess so far
Got home from work and jumped straight into Marvin, took him out for a 8 miles drive, with lost of throttle and lift off sections that should work the engine and the temp gauge stayed here:
The speedo is now reading 43 miles which is actually 40 miles driven so far as the speedo had 3 miles on it when I got it. Please ignore the fuel gauge its decided to pack up again… I think the sender is a bit iffy as it says empty but there is 10 litres in the tank. (or was 30 miles ago).