I have got used to the speed of downward movement on the 5L Supercharged but this morning the gauge twice just went from 3/4 full to 1/4 full of its own accord with a corresponding drop in distance to empty of 230 miles to 89 miles.

It seems OK now - has anyone else experienced this ? Geoff

When mine did it albeit on a 2008my it was the in tank senders. Used to flick between full and empty but only when I had brimmed it. New sender sorted it. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Typically senders on that, you can check them yourself from the out of tank connector multi plug with an ohm meter to determine which is faulty, but I always replace both.

Whats the approx total cost to replace both senders - my gauge is just continuously erratic.

Not cheap,

From memory the senders were about £250, plus fitting which was about 1.5hours I think. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

supershuttle wrote:

I have got used to the speed of downward movement on the 5L Supercharged but this morning the gauge twice just went from 3/4 full to 1/4 full of its own accord with a corresponding drop in distance to empty of 230 miles to 89 miles.

It seems OK now - has anyone else experienced this ?

Geoff, its a well known fault and there is a TSB about it sir... Recommended (by JLR) the dealer has your car removed the tank pump plug (internally) and solders the wiring together as the wiring plug goes wrong! Even fitting a new pump will not fix the fault long term sir...

Fault is because "one pump" stops reading fuel level and a mean average is then taken so will always read 1/4 full

Craig, I take it that I will have to pay for the work or is it warranty? Geoff

Try your dealer Geoff... Unsure weather its a non cost repair sir (i would guess probably not!)

Unnecessary quote removed


That TSB is garbage. Not too many of us actually believe in it. And we're simply putting a PIDGE connector on the two wire connectors, not actually soldering them. If it's under warranty we have to do this first, but I've had this bulletin fail on 3 occasions, and I end up doing senders anyway.

Is this a DIY job, can the bridging be done externally?
Its actually stopped playing up at the moment but I'm sure it will recur. Geoff

Rovertech wrote:

Unnecessary quote removed


That TSB is garbage. Not too many of us actually believe in it. And we're simply putting a PIDGE connector on the two wire connectors, not actually soldering them. If it's under warranty we have to do this first, but I've had this bulletin fail on 3 occasions, and I end up doing senders anyway.

And on how many occasions have the fix worked?

I have done this 20+ times and its not failed to work yet!
So, please don't be so quick to dismiss something as "GARBAGE" on an open public forum when clearly the TSB is there for a reason! and has clearly worked for me several times!

Craig, I'm liking the possibility that I don't need to replace the senders, can it be done externally or will I have to get the tank out in which case it's probably best left to a dealer. Geoff

Geoff,

It would mean taking the pumps out of the tank (under the back seat) and soldering the connector...

Thanks Craig.
I'll have a look at doing it myself - after all what can go wrong its only petrol  Geoff

Exactly!!!

I have ONLY ever done them on derv and have never had one fail to work... I will find you the info you need and if needs be copy it and forward it to you via e-mail...

PM me your e-mail address