Alfa Romeo Forum banner

156 trip computer confusion!

2K views 10 replies 5 participants last post by  jwq 
#1 ·
Morning all. Got a 2.0 jts and I'm confused.
I filled the tank yesterday and reset the mileage on the speedo to zero, I also reset the on board computer, the mpg the lot.
Now the mileage on my speedo says one thing and the distance travelled on the computer says another. Probably a 5 mile difference?
Anyone seen this before or have any ideas?
Cheers.
 
#8 ·
Hmmm, well, if the ABS unit only sends data on revolutions of the wheels, a difference could still occur if the trip computer and the speedo unit have different values for wheel circumference.

If the ABS unit has its own, single value for wheel circumference, then I have no idea.
 
#9 ·
Right then. Doube checked and the distance traveled on the trip computer was in miles. I switched it to km and it matched what was on the speedo. So the speedo is clocking km. Except it shows on the trip display as being miles and the actual speedo is clocking miles too. Confused.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top