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2022/09/23

1990 Buick Riviera: New Battery

    The battery in my 1990 Buick Rivera was defective and I got it exchanged on warranty at Advance Auto Parts in Woodsfield, Ohio.  The battery is made by DieHard.  The model is "silver" and the part number is 34/78-4.  It has both side and top posts.  The dash cluster comes on and off, but it seems to get the odometer mileage right, perhaps because it's saved to the ECU and it's still measuring it?  But for the times that it doesn't work, I have an odometer app on my smartphone, which I set according the last time the Rivi's odometer was on.  

    That's currently reading 126,132.1 miles.  But every time the odometer comes back on, there's a discrepancy between the two odometer mileages and the app has to be adjusted from time to time.  As a GPS person, this could be due to the device's inaccuracies?   For instance, when driving or walking, the device gets it's distances right.  But when at a stop, the accuracy on where it's reporting it's position fluctuates.  When it happens, it plots a new anchor and the track would look like a knot if this data was extracted and overlaid in something like Google Earth.  If the GPS were recording a track when the sky is overcast, the accuracy could be +/- 52ft from the present position at any given moment.

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