Fuel Senders

MGOracle · 23rd March 2008, 12:10

Guys, I need to sort this out and appreciate any help that people can give.

I know I have a fuel sender issue but I need to sort it.

I had an 1/8th of a tank showing today. Filled up until I could see the diesel in the filler neck.

Turned the key and the fuel guage went up to just over half and the range showed 333miles.

Now, I replaced the intank pump in January and it works fine although it was a second hand unit, when I filled up the guage would behave normally.

I need to know what to check and if parts are available, etc.

Thanks

Phil · 23rd March 2008, 12:31

I'm not sure of the setup, but I would have thought the easiest thing to do would be to remove them from the tanks and work them manually and see what the gauge does, or check the resistances. Silly question but just a thought, have you done a gauge check?

MGOracle · 23rd March 2008, 12:38

Whats a guage check? The one were you make the needles swing all the way around?

If so, done that, and its fine, full ROM.

How do I check the resistances and what are they? Also, where in the tank is the other resistor?

Phil · 23rd March 2008, 12:47

Gauge check, yeah makes the needles sweep, the fuel tank floats must give resistance reading. I will try and find out for you later what it should be, unless someone can help before.

sworks · 23rd March 2008, 12:52

the opposite side of the tank - use a multimeter and check for the resistor going open circuit, i can't remember if they are the same part number but use one reading against the other

MGOracle · 23rd March 2008, 13:31

Do you access it from the panel on the other side under the seat?

sworks · 23rd March 2008, 14:04

Yep thats the one, comes apart in the same way

23rd March 2008, 12:10	#1
MGOracle Banned MG ZT CDTi 135+ Join Date: Mar 2007 Location: Cardiff Posts: 1 Thanks: 0 Thanked 5 Times in 2 Posts	Fuel Senders Guys, I need to sort this out and appreciate any help that people can give. I know I have a fuel sender issue but I need to sort it. I had an 1/8th of a tank showing today. Filled up until I could see the diesel in the filler neck. Turned the key and the fuel guage went up to just over half and the range showed 333miles. Now, I replaced the intank pump in January and it works fine although it was a second hand unit, when I filled up the guage would behave normally. I need to know what to check and if parts are available, etc. Thanks

23rd March 2008, 12:31	#2
Phil This is my second home Rover 75 CDT Connoisseur SE Join Date: Nov 2006 Location: Wales Posts: 12,227 Thanks: 469 Thanked 523 Times in 241 Posts	I'm not sure of the setup, but I would have thought the easiest thing to do would be to remove them from the tanks and work them manually and see what the gauge does, or check the resistances. Silly question but just a thought, have you done a gauge check? __________________

23rd March 2008, 12:47	#4
Phil This is my second home Rover 75 CDT Connoisseur SE Join Date: Nov 2006 Location: Wales Posts: 12,227 Thanks: 469 Thanked 523 Times in 241 Posts	Gauge check, yeah makes the needles sweep, the fuel tank floats must give resistance reading. I will try and find out for you later what it should be, unless someone can help before. __________________

23rd March 2008, 12:38	#3
MGOracle Banned MG ZT CDTi 135+ Join Date: Mar 2007 Location: Cardiff Posts: 1 Thanks: 0 Thanked 5 Times in 2 Posts	Whats a guage check? The one were you make the needles swing all the way around? If so, done that, and its fine, full ROM. How do I check the resistances and what are they? Also, where in the tank is the other resistor?

23rd March 2008, 12:52	#5
sworks Been absent for a while… Rover 75 Tourer, Classic mini Cooper S, Abarth 595 competizione, MG TF and a Hyundai Tucson PHEV Join Date: Feb 2007 Location: Cumbria Posts: 13,069 Thanks: 1,033 Thanked 1,686 Times in 1,040 Posts	the opposite side of the tank - use a multimeter and check for the resistor going open circuit, i can't remember if they are the same part number but use one reading against the other

23rd March 2008, 13:31	#6
MGOracle Banned MG ZT CDTi 135+ Join Date: Mar 2007 Location: Cardiff Posts: 1 Thanks: 0 Thanked 5 Times in 2 Posts	Do you access it from the panel on the other side under the seat?

23rd March 2008, 14:04	#7
sworks Been absent for a while… Rover 75 Tourer, Classic mini Cooper S, Abarth 595 competizione, MG TF and a Hyundai Tucson PHEV Join Date: Feb 2007 Location: Cumbria Posts: 13,069 Thanks: 1,033 Thanked 1,686 Times in 1,040 Posts	Yep thats the one, comes apart in the same way