Search found 2 matches

by insomniac
Thu May 22, 2008 9:18 pm
Forum: Electrical System and Diagnostics
Topic: Constant 999.9mpg?
Replies: 3
Views: 1039

Re: Constant 999.9mpg?

Tried the stalk thing and it resets ok but problem still there. Whatever speed sensor the trip computer uses is working ok cause I'm getting 'proper' average speed readings. Any idea where the computer gets it's fuel flow readings from? Is it just one sensor or is it the main ECU that's working thin...
by insomniac
Thu May 15, 2008 11:54 pm
Forum: Electrical System and Diagnostics
Topic: Constant 999.9mpg?
Replies: 3
Views: 1039

Constant 999.9mpg?

I bought my first 406 a couple of months ago - Y plate 406 HDi (90) estate. Impressive fuel economy but the trip computer is a little too optimistic - it's always showing 999.9mpg! :frown: It starts at '---' when stationary but climbs almost immediately to 999 as soon as I go above approx 20mph. How...