Gauges - Accuracy? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Gauges - Accuracy?


Rick Neighbors
08-27-2004, 06:39 PM
I have a LLY with apx 6,000 miles on it. Previous to changing the oil, I noticed some fluctuation in the oil pressure. Not radical, but the needle moves around more than I like. Changed the oil, still the same movement. Anyone else had this "problem"?

Also, I noticed that the fuel gauge is way slow! When I fuel up it may take a couple of miles before the gauge registers full. Also the idiot light and ding ding bell for low fuel will come on, and then go off, when it's low on fuel, but not on empty.
???

Thanks,
Rick

marcdeluca
08-27-2004, 06:45 PM
My fuel gauge is the same way. My guess is that they have a dampened sending unit so that going around corners and fuel sloshing doesn't make the gauge move constantly. Can't speak for the oil pressure. What oil pressure do you have at operating temp going 60? How about at idle? Mine runs around 40 at 60 mph and about 20 at idle. You may have a squirrely sending unit.