Stupid infocenter or something!

[EnZo]

My dash works fine the speedometer works the odometer works the infocenter it's like an idiot person ...
Exterior temp - ok
Engine temp (water) - ok
Oil temp - ok
fuel level - ok
range - works
but avarrage speed - allways show 6km/h
Fuel avg - allways show 25.5
fule ins - allways show 25.5
what is the problem ???
i check the plugs of the dash , i use spary contact clinear, i check the main dashbord
i don't know what is the problem i am fustrated

[coyote1980]

It seems like your computer doesn't get any new speed-signals from one of the sensors, and therefor is unable to update any data...

Your range is probably calculated all the time using old speed/consumption data against current tank content. So it will look quite accurate. If you drive in a town for some time you should see it dropping quite a bit, won't happen in your case I suspect.

Just don't know what sensor will be at fault.

[madtuning]

i have almost the same problem-fuel avg shows ca.6-7L per 100km
fuel ins shows on 90km/h ca.4L per 100 km

[heavend]

If the speedo is correct, but the calculations incorrect, I'd say the sensors are OK, and the fault is in the CEM module which sits on the back of the instrument panel. A faulty connection/broken solder joint between the CEM and instrument panel would cause this symtom. Also check my previous posting about leaky electrolytic capacitors in the CEM. They cause all sorts of malfunction.