Fuel Gauge goes down halfway then goes up again

Animesis · 31st December 2016, 00:04

For a few weeks now the gauge has been odd, Im thinking it may be a sign of the intank pump not working or some damage/dislocation to the floats?

The gauge shows full as normal when filled with fuel, and gradually goes down to about halfway, at which point it starts going up again. So the fuel gauge shows Full when tank is full, halfway when its half full, and shows full when its empty -or would, but after it ran dry a few weeks ago we have been topping it up regularly.

Any ideas?

t5tart · 31st December 2016, 01:47

Quote:

Originally Posted by Animesis

For a few weeks now the gauge has been odd, Im thinking it may be a sign of the intank pump not working or some damage/dislocation to the floats?

The gauge shows full as normal when filled with fuel, and gradually goes down to about halfway, at which point it starts going up again. So the fuel gauge shows Full when tank is full, halfway when its half full, and shows full when its empty -or would, but after it ran dry a few weeks ago we have been topping it up regularly.

Any ideas?

lol I have the opposite the tank shows empty until at half a tank then shows half a tank and down ...

its the float sender lol

got a new pump ready to install ill live with it for now although its frustrating not knowing exactly how much fuel is in there

sometimes it will show just above the red next time you turn it on its crept up again

FrenchMike · 31st December 2016, 07:10

Quote:

Originally Posted by Animesis

For a few weeks now the gauge has been odd, Im thinking it may be a sign of the intank pump not working or some damage/dislocation to the floats?

The gauge shows full as normal when filled with fuel, and gradually goes down to about halfway, at which point it starts going up again. So the fuel gauge shows Full when tank is full, halfway when its half full, and shows full when its empty -or would, but after it ran dry a few weeks ago we have been topping it up regularly.

Any ideas?

Hi, as you can see "full" mean high sender resistor .
i think the sliding contact is incorrect in the half way zone

Mike

T-Cut · 31st December 2016, 10:31

This is a useful thread about servicing the float rheostats: http://www.the75andztclub.co.uk/foru...d.php?t=194156

TC

31st December 2016, 00:04	#1
Animesis Loves to post Rover 75 saloon 2.0l Diesel Connoisseur Join Date: Apr 2016 Location: Wokingham Posts: 259 Thanks: 136 Thanked 21 Times in 15 Posts	Fuel Gauge goes down halfway then goes up again For a few weeks now the gauge has been odd, Im thinking it may be a sign of the intank pump not working or some damage/dislocation to the floats? The gauge shows full as normal when filled with fuel, and gradually goes down to about halfway, at which point it starts going up again. So the fuel gauge shows Full when tank is full, halfway when its half full, and shows full when its empty -or would, but after it ran dry a few weeks ago we have been topping it up regularly. Any ideas? __________________ Gearbox change, clutch, subframe refurbish, handbrake mod, drumbrake repair, rear coils, plate PCB repair, sunroof drains refitted, trim leak fix, cruise control fix, cleared EGR/inlet, new strut bearings, USB sockets in rear ashtray, new front brake pipes/hoses, repaired undertray, new o/s rear upper arm, refurbished rear suspension&subframe, fixed back light leak, new exhaust, fitted HID xenons, FBH fix, new thermostat, armrest LEDs, wood dash, new hydromount, natnav, tyres, numberplates

31st December 2016, 10:31	#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	This is a useful thread about servicing the float rheostats: http://www.the75andztclub.co.uk/foru...d.php?t=194156 TC