[DML] Odd Temperature Gauge

["Marv Hein" <marvhein@xxxxxxxxxxx>]

I've generated some recent questions on the AZ-D message board about 
whether my car is running too cold during the winter.  If the car is 
moving, the gauge sits around 1/8.  If in heavy traffic, the gauge 
slowly gets to the 1/4 mark and the fans kick in.

At first glance the 1/4 mark lies halfway between 100 and 220, or 160.
At 1/8, my car would be running around 130.  Brr!  Otterstat kicks in 
early too.

But AZ-D members with other temp measuring equipment assure me their 
cars are similar on the standard gauge but run properly in the 185-
200 degree range.  First thoughts were that the D gauge is inaccurate.

With the top part of the scale spanning only 40 degrees, the gauge 
certainly appears to very non-linear.

Our latest speculation is that the gauge IS actually linear and has a 
silly label at the low end of the scale.  

In other words, the gauge may span only 90 degrees, not 160, and the 
needle may not move much until temps are 180, leaving the remaining 
marks evenly spaced at about 200 (1/4), 220, 240 (3/4) and 260.

Has anyone measured when the needle actually starts moving at the low 
end?

Thanks,
Marv 
#10820
AZ-D









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