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Post by Warwick (Ozcoupe) on Apr 23, 2007 7:51:41 GMT
I thought I posted this earlier today, but I must have accidentally deleted it or something. Either that or I'm losing my mind.
What sort of accuracy is typical for the fuel gauge? I know that many car's gauges were a bit non-linear back then (some still are) but mine must either be faulty or have a bent sender arm.
If filled to the top it reads off-scale. The needle doesn't move for 100km or so. After about 130km from full it reads full. Another 140km or so brings it back to 3/4. After that you can almost see the needle moving when driving at highway speeds. I think it's getting close to empty at around 1/4. I haven't had it long enough to experiment. I've only driven it on one long run and I couldn't afford to run out in the middle of nowhere, so I filled it again whenever it got to about 1/2.
I presume that the reserve simply opens a draw-off point closer to the bottom of the tank, and that it gives you a reserved volume that is available AFTER the gauge reads empty. Is that correct?
In other words, I need to adjust it so that it reads full when full and empty when it expires with the reserve valve closed; or at least as close to this ideal as is possible for a device as imprecise as a car fuel gauge.
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Post by Phil Nottingham on Apr 23, 2007 16:38:28 GMT
Your are correct - its not linear either and the gauge markings attempt to adjust this. None of the several P5's I have had over the years have had the readings on the gauge. My curent P5B means empty when it says and will go on reserve. It reads just over full on brim.
My 3 Litre Coupe leaves approx 3 gals in on Empty and is overful when brimmed
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Post by Warwick (Ozcoupe) on Apr 23, 2007 23:42:04 GMT
Thanks Phil. Still much to discover.
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