Re: Why is this?

Posted by Clooney on March 02, 2003 at 09:40:48 from (172.162.155.113):

In Reply to: Why is this? posted by Les...fortunate on March 01, 2003 at 15:08:56:

Les, I can't speak for all automobile but on most GM cars & trucks there is a calibrated delay built into the gage circuits to eliminate gage needle flutter & unwanted movement. Especially on the later electronic gages. If there wasn't some sort of circuit or needle dampening the needles would fluctuate any time the vehicle was moving or the fuel was sloshing around. There is a lot of work & calibration effort put into the fuel gage dampening & update intervals. On some of the later electronic gages the update is so slow you could run over something in the road & puncture the fuel tank & run out of fuel before the gage showed empty. There are even some gage circuits that base the gage update intervals on road speed. When you turn the ignition switch off then back on the system does a initial update, then goes to a programmed or dampened update interval......

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