[T3] Recalibrate speedometer

Jim Adney jadney at vwtype3.org
Sat May 9 08:27:09 PDT 2015

On 9 May 2015 at 7:32, Jacob Adam Schroeder wrote:

> Thanks for all the replies.  So far it seems to be a linear issue and by
> that I mean that it is always off by 10 mph.  It is annoying, but I have
> other issues to troubleshoot in the meantime that are a higher priority.

Mathematically, "linear" usually means "proportional" so what you 
seem to have is a constant error, neither linear, proportional nor 
exponential. Yeah, I know, these all get mixed up in the general 

> I really only started noticing this issue because my fuel gauge has started
> acting up and I have been relying on the odometer to measure my mileage as
> a proxy for how much fuel I have left.  Using the odometer, my gas mileage
> seems low, and that got me thinking.  My fuel gauge was working recently,
> so I will focus on getting that going first and will likely start a new
> thread about that.

FYI, I repair both speedos and gas gauge senders. Both have rather 
common problems that are annoying. In most cases, none of them are 
simple DIY projects.

Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA

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