The 75 and ZT Owners Club Forums - View Single Post - Fuel gauge

SD1too · 3rd January 2021, 17:13

Hi Paul,

I don't think there's anything wrong with your car. The instrument pack has circuitry which processes the signal from the level senders and takes into account road speed; effectively it introduces an element of current fuel consumption into the gauge indication. My guess is that this is re-calibrated when the ignition is turned on. Since you left the engine running when refilling, the instrument pack didn't know that extra fuel had been added.

Thanks for carrying out that useful experiment!

Simon

3rd January 2021, 17:13	#3
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,386 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Hi Paul, I don't think there's anything wrong with your car. The instrument pack has circuitry which processes the signal from the level senders and takes into account road speed; effectively it introduces an element of current fuel consumption into the gauge indication. My guess is that this is re-calibrated when the ignition is turned on. Since you left the engine running when refilling, the instrument pack didn't know that extra fuel had been added. Thanks for carrying out that useful experiment! Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.