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Date: 24 Jun 1999 06:44:52 PDT
From: Christopher Petrilli <petrillinopsamp.amber.org>
Subject: Re: '95 9000 Trip Computer Accuracy


epowsnernopsameja.com wrote: > My trip computer loses 1 mile per 25 miles when compared to the highway > mile-markers. If I travel 25 miles (as measured by the mileposts) my > trip computer registers only 24. Is this within normal accuracy range? > I assume that the computer is also miscalculating miles-per-gallon and > other measurements. > Is the computer tied into the car's mechanical odometer? If not, then > what/where does it get its data? It's tied to the speedometer, but regardless... this isn't that inaccurate in my experience... my Aero looses about the same. Most cars have 2-4MPH inaccuracies at 60MPH... almost always reading high for the speed they're going. Mile markers TEND to be accurate. The only speedometers that I've seen which are dead on accurate are the ones in cop-cars :-) They have to becertified, tested, and then they're sealed, and then have to be retested every year I think. Anyway, the reason is multifold... inaccuracies in the mechanical parts of the system, but also the bigger one, differences in tire-height. Chris -- | Christopher Petrilli ``Television is bubble-gum for | petrillinopsamr.org the mind.''-Frank Lloyd Wright

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