Litrometric failure, fix needed!!!

phunk3r · 14th March 2012, 12:25

Dear all!

since about 1 year i have a problem with the fuel gauge... when i reach the last quarter of the gauge my car remains out of fuel and it stops... when a put some fuel is stars back with no problems... when put on the tester it gives me that the litrometric sensor have failed.

I have a 2.0 CDT Rover 75.

I spoke to a friend of mine who owns a breakage parts store and he provided me the litrometric from a gasoline fuel pump and he said that it will work just fine. i started mounting it, taking the contact piece and the flotor and instaling the on my own fuel pump... but still no success... he than said the there are two litrometric sensor in the fuel tank...

the question is, can anybody tell me where the second one is and how i can access it and maybe clean it?

thank you in advance.

James.uk · 14th March 2012, 13:14

I think the sensor and floats are a part of the in tank fuel pump on the Mk1 diesel 75... Not sure about the mk2 though...
...

courier118 · 14th March 2012, 13:29

The fuel sensor is fitted to the fuel module which is located on the N/S (UK).The O/S (UK) is where the pump is located.The 2 assemblies are i assume are what your friend is referring to.The sensor is no longer available as a seperate item,part number XNB000020.

phunk3r · 14th March 2012, 13:57

Quote:

Originally Posted by courier118

The fuel sensor is fitted to the fuel module which is located on the N/S (UK).The O/S (UK) is where the pump is located.The 2 assemblies are i assume are what your friend is referring to.The sensor is no longer available as a seperate item,part number XNB000020.

Can you please provide a picture of that sensor? google doesnt want to help me... the one that i replaced was accesible from behind the passenger seat, (left hand drive) behind the rear seat, and it was attached to the fuel pump, the flotor and a small piece of plastic with lots od contact-dials on it, is this the one you are talking about?

another issue is that, when i enter in the diagnostic mode at the fuel tank sensors, only the one on the right shows quantity, the other one shows nothing....

ooooh, and can you please translate N/S and O/S ?
thanks...

phunk3r · 14th March 2012, 14:14

Dear ALL,

i attached pictures taken in diagnostic mode, showing the data from the sensors...

courier118 · 14th March 2012, 14:40

The sensor is fitted to the fuel module,not the pump.The module on a RH drive UK model is behind the passenger seat.The pump is located behind the drivers seat.

http://www.rimmerbros.co.uk/Item--i-GRID001964

Singvogel · 14th March 2012, 15:11

Quote:

Originally Posted by phunk3r

ooooh, and can you please translate N/S and O/S ?
thanks...

For your future reference -

Folks in the UK often refer to the N/S or the 'Near Side' meaning the left-hand side of the car if you are facing forwards.

Similarly the O/S refers to the 'Off-Side' meaning the right-hand side of the car.

Confusing if you have not met these terms before - it comes from living on an island which tends to do things differently from most of the rest of the world, particularly driving on the left side of the road!

Caio,

Singvogel.

phunk3r · 14th March 2012, 15:22

Quote:

Originally Posted by Singvogel

For your future reference -

Folks in the UK often refer to the N/S or the 'Near Side' meaning the left-hand side of the car if you are facing forwards.

Similarly the O/S refers to the 'Off-Side' meaning the right-hand side of the car.

Confusing if you have not met these terms before - it comes from living on an island which tends to do things differently from most of the rest of the world, particularly driving on the left side of the road!

Caio,

Singvogel.

Thank you very much, i appreciate you country, especially because it has produced one of the prettier car ever produced, the car i drive every day, the ROVER 75...

and regarding the subject, can you please check the pictures and tell me, if you know why it doesn't display anything in the secound picture? there the total amount of fuel should appear...

T-Cut · 14th March 2012, 15:46

Quote:

Originally Posted by phunk3r

attached pictures taken in diagnostic mode, showing the data from the sensors...

In my experience using diagnostic mode, the details from Test 6 are meaningless. I wouldn't attempt to interpret what the display means.
As far as the fuel level sensors are concerned, there are two, one in each side of the tank. The in-tank pump module has a float arm and the 'Filter Adapter' module in the nearside also has one. They work independently and supply a voltage to the IPK. The IPG integrates this to provide a reading on the fuel gauge.

Here's an example.

The floats alter the resistance of a rheostat within the module and this controls the output voltage. The resistances vary linearly with the float level. If you use an ohm meter you can check the resistances. Doing this with a full and empty tank should tell if the floats are working properly.

The contacts are in the pump connector socket under the rear seat.

TC

phunk3r · 14th March 2012, 21:23

Dear T-CUT, can i measure those pins and see if the sensor is working fine? and do you know witch value means empty and witch full?

Thank you for all this tremendous information! i will go to my mechanic and check this out!

14th March 2012, 12:25	#1
phunk3r Newbie Rover 75 Join Date: Apr 2008 Location: Bucharest Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	Litrometric failure, fix needed!!! Dear all! since about 1 year i have a problem with the fuel gauge... when i reach the last quarter of the gauge my car remains out of fuel and it stops... when a put some fuel is stars back with no problems... when put on the tester it gives me that the litrometric sensor have failed. I have a 2.0 CDT Rover 75. I spoke to a friend of mine who owns a breakage parts store and he provided me the litrometric from a gasoline fuel pump and he said that it will work just fine. i started mounting it, taking the contact piece and the flotor and instaling the on my own fuel pump... but still no success... he than said the there are two litrometric sensor in the fuel tank... the question is, can anybody tell me where the second one is and how i can access it and maybe clean it? thank you in advance.

14th March 2012, 13:14	#2
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	I think the sensor and floats are a part of the in tank fuel pump on the Mk1 diesel 75... Not sure about the mk2 though... ...

14th March 2012, 13:29	#3
courier118 Loves to post MG ZT 190+ Join Date: Nov 2006 Location: Newcastle under Lyme Posts: 305 Thanks: 0 Thanked 0 Times in 0 Posts	The fuel sensor is fitted to the fuel module which is located on the N/S (UK).The O/S (UK) is where the pump is located.The 2 assemblies are i assume are what your friend is referring to.The sensor is no longer available as a seperate item,part number XNB000020.

14th March 2012, 14:40	#6
courier118 Loves to post MG ZT 190+ Join Date: Nov 2006 Location: Newcastle under Lyme Posts: 305 Thanks: 0 Thanked 0 Times in 0 Posts	The sensor is fitted to the fuel module,not the pump.The module on a RH drive UK model is behind the passenger seat.The pump is located behind the drivers seat. http://www.rimmerbros.co.uk/Item--i-GRID001964

14th March 2012, 21:23	#10
phunk3r Newbie Rover 75 Join Date: Apr 2008 Location: Bucharest Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	Dear T-CUT, can i measure those pins and see if the sensor is working fine? and do you know witch value means empty and witch full? Thank you for all this tremendous information! i will go to my mechanic and check this out!