fuel warning light

saggy0000 · 18th February 2018, 19:25

hi,does anyone know haw much fuel is left in the tank on a 1.8 conny when the light comes on?? thanx S

HarryM1BYT · 18th February 2018, 19:39

Quote:

Originally Posted by saggy0000

hi,does anyone know haw much fuel is left in the tank on a 1.8 conny when the light comes on?? thanx S

It does not come on at an amount left in the tank, rather it works on the remaining fuel range. It calculates the range, based on your present consumption and comes on if the range is less than a pre- determined range.

Which means the light can appear if the tank is low and you have just started it cold, then later go back off.

impvan · 19th February 2018, 07:35

On the 1.8 ZT-T, it comes on when it calculates that you've got 50 miles left in the tank.

T-Cut · 19th February 2018, 09:21

It not that clever.

2004 Handbook

The range to empty can be displayed at any time by asking the trip computer, but only if you have the HiLine system.

TC

HarryM1BYT · 19th February 2018, 10:41

Quote:

Originally Posted by T-Cut

It not that clever.

The range to empty can be displayed at any time by asking the trip computer, but only if you have the HiLine system.

TC

I understood we had established that the handbook was wrong?

That it does not behave that way, that it doesn't come on at a set quantity of fuel. It can be off when I park up, come on as I restart, then go back off again once on the road. In other words - more rapid consumption can bring it on. The actual gauge itself, at lower fuel levels - can rise rise and fall with varying consumption rates.

All of that suggests the gauge display and warning light are based on a calculated range, rather than a quantity of fuel remaining. It is set up so as to deliberately panic the driver, before it runs out. Even if the HiLine system is not installed, the range calculation will still be done and the result available to the rest of the system.

T-Cut · 19th February 2018, 11:42

I've never been convinced by the conclusion made from the on/off warning light, but I would be if there was good data. I think it needs more on the road tests to gain a better understanding of the system. I'll make the hypothesis that if one driver gets the warning at 100mph and another driver gets it at 20mph, they'll both have a similar amount of fuel in the tank at that point. It needs to be tested using the float rheostat readings in these conditions. It won't get done unfortunately, so we'll never really know.

TC

saggy0000 · 19th February 2018, 18:53

12miles is ok at 50 mph or have i missed the point???

T-Cut · 19th February 2018, 19:01

Quote:

Originally Posted by saggy0000

12 miles is OK at 50 mph or have i missed the point?

I have no idea.

TC

saggy0000 · 19th February 2018, 19:03

[QUOTE=saggy0000;2597702]12miles is ok at 50 mph or have i missed the point???

[ 9 liters??????

Al_B · 19th February 2018, 20:20

How about using the dash button menu yo get the fuel sender readout? That will tell you how much is in the tank won't it?

18th February 2018, 19:25	#1
saggy0000 Regular poster ROVER 75 Join Date: Nov 2017 Location: WIGAN Posts: 48 Thanks: 13 Thanked 2 Times in 2 Posts	fuel warning light hi,does anyone know haw much fuel is left in the tank on a 1.8 conny when the light comes on?? thanx S

19th February 2018, 19:03	#9
saggy0000 Regular poster ROVER 75 Join Date: Nov 2017 Location: WIGAN Posts: 48 Thanks: 13 Thanked 2 Times in 2 Posts	[QUOTE=saggy0000;2597702]12miles is ok at 50 mph or have i missed the point???[ 9 liters??????

19th February 2018, 07:35	#3
impvan Avid contributor ZT-T Join Date: Aug 2012 Location: In the trees, near Caernarfon... and frequently Aberdeenshire, and sometimes Romania.. Posts: 143 Thanks: 5 Thanked 36 Times in 29 Posts	On the 1.8 ZT-T, it comes on when it calculates that you've got 50 miles left in the tank.

19th February 2018, 09:21	#4
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,752 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	It not that clever. 2004 Handbook The range to empty can be displayed at any time by asking the trip computer, but only if you have the HiLine system. TC

19th February 2018, 11:42	#6
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,752 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	I've never been convinced by the conclusion made from the on/off warning light, but I would be if there was good data. I think it needs more on the road tests to gain a better understanding of the system. I'll make the hypothesis that if one driver gets the warning at 100mph and another driver gets it at 20mph, they'll both have a similar amount of fuel in the tank at that point. It needs to be tested using the float rheostat readings in these conditions. It won't get done unfortunately, so we'll never really know. TC

19th February 2018, 18:53	#7
saggy0000 Regular poster ROVER 75 Join Date: Nov 2017 Location: WIGAN Posts: 48 Thanks: 13 Thanked 2 Times in 2 Posts	12miles is ok at 50 mph or have i missed the point???

19th February 2018, 20:20	#10
Al_B Newbie ZT saloon Join Date: Dec 2017 Location: Beds Posts: 28 Thanks: 0 Thanked 6 Times in 6 Posts	How about using the dash button menu yo get the fuel sender readout? That will tell you how much is in the tank won't it?