480 instant fuel consumption

[M D E]

After many hours of repair I have fixed my fuel computer. Original problem was a semi constant reading of 61.5 mpg. But I still have a problem that the instant fuel consumption reads correctly upto 55mph but after that sticks again on 61.5mpg any ideas ? ....

[B20F]

I replied to your Q here (http://volvo480.dragons.org.uk/forum/viewtopic.php?p=156147#156147) on the europe480 forum. hth

[M D E]

Many thanks for your reply