Calculation error on trip/MPG counter - Alfa Romeo Forum
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(Post Link) post #1 of 1 Old 16-09-13 Thread Starter
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Join Date: Jul 2013
Location: United Kingdom
County: West Sussex
Posts: 35

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2003 156 2.4 jtd

Calculation error on trip/MPG counter

Hi All,

on my 2003 156 I have the on board computer in the centre that is, shall we say - a bit Alfa.

I thought that the MPG figures given where wrong, so on a fill up I reset both the computer counters and the trip on the seepdo/odometer.

My thoughts were confirmed the speedo counter was accurate enough on a know journey, but for every mile it did he computer thought I was doing 0.6 of a mile. So it appears that it is taking the info from the odometer and correcting it from KMS to Miles, when it actually doesn't need to.

Is this a simple fix, re-program or am I looking a silly money for parts.

It is not a big issue and I can do the sums easy enough to get true MPG etc.

81972a is offline  

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calculation , counter , error , trip or mpg

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