Little One
- Thread starter 6stings
- Start date
6stings
A2OC Donor
Nothing disturbs these guys, I really appreciate that they are willing to explain everything!
Excellent service!
6stings
A2OC Donor
Not surprised the top of the fuel tank pump can get so dirty, the fuel hoses runs through the canals that are opened at the bottom, nothing stops the dirt on the bottom side!
Cleaned looks better. Stuffed some cloth in the canals, maybe that will help to keep it clean.
Didn't pull the pump out just turned it little left and right, hoping it would help.
It did!
Now the fuel level doesn't point to empty, actually it shows double as much as before
But, the most important thing is that the terrible peeping at the start is gone. We'll see how long it will last.
The fuel level sender works in a mysterious ways on a windy Sunday morning.
Cleaned looks better. Stuffed some cloth in the canals, maybe that will help to keep it clean.
Didn't pull the pump out just turned it little left and right, hoping it would help.
It did!
Now the fuel level doesn't point to empty, actually it shows double as much as before
But, the most important thing is that the terrible peeping at the start is gone. We'll see how long it will last.
The fuel level sender works in a mysterious ways on a windy Sunday morning.
Last edited:
wilco184
Member of the year 2015
Interesting, Darko.
Have I read somewhere that you've fitted a replacement fuel tank level sender? If so, do you know the part number of the sender or fuel pump assembly that you have fitted?
I ask because there are two types of level sender available, one for the 34L tank and one for the 42L tank. The principle of operation of both level devices is that the resistance of the sender changes dependant on the fuel level. The difference being for the 34L and 42L senders are that for one (I don't recall which) the resistance decreases when fuel is added, and for the other, the resistance increases when fuel is added. In your case, if you had the incorrect sender fitted, then as fuel was drained the fuel gauge could move the other way, as the resistance is reporting to the instrument cluster that more fuel is being added. Correct sender = full tank, full gauge. Incorrect sender = full tank, empty gauge.
I'm not sure if it's even possible to fit a 34L sender or fuel pump to your 42L tank, but it may be worth investigating.
Regards,
Matt.
6stings
A2OC Donor
Interesting, Darko.
Have I read somewhere that you've fitted a replacement fuel tank level sender? If so, do you know the part number of the sender or fuel pump assembly that you have fitted?
I ask because there are two types of level sender available, one for the 34L tank and one for the 42L tank. The principle of operation of both level devices is that the resistance of the sender changes dependant on the fuel level. The difference being for the 34L and 42L senders are that for one (I don't recall which) the resistance decreases when fuel is added, and for the other, the resistance increases when fuel is added. In your case, if you had the incorrect sender fitted, then as fuel was drained the fuel gauge could move the other way, as the resistance is reporting to the instrument cluster that more fuel is being added. Correct sender = full tank, full gauge. Incorrect sender = full tank, empty gauge.
I'm not sure if it's even possible to fit a 34L sender or fuel pump to your 42L tank, but it may be worth investigating.
Regards,
Matt.
Very interesting, Matt!
I replaced the pump with the new one with the sender attached to it. It sure made the engine work better than with the old one, but the sender was stuck from the first moment.
I got confirmed that the original fuel pump part number was 8Z0919051C (thanks to THS) while the non-original replacement pump had no part number on it.
The 8Z0919051C was used in both 1.4 petrol and 1.6FSI, as far as I could find out. Means, they used it both in 34L and 42L tanks.
But I couldn't find the fuel sender part number(s) anywhere.
And if they used different senders for different sized tanks was a question.
The pump I have works like a clockwork, really, I need just a sender and everything will be fine, I believe.
Cheers
Last edited:
wilco184
Member of the year 2015
Hi Darko,
As far as I can tell, the 8Z0 919 051 C fuel pump/sender assembly is for petrol cars with the 42L fuel tank. This tank was fitted to all FSI's and some BBY 1.4 engined cars, dependant when they were built. The correct part number for the sender for your car should be 8Z0 919 673 F.
If you still have your old fuel pump assembly, I wonder if you could swap the sender parts over to the new pump assuming the old sender was in good working order?
Edit: If you want clarification that the correct sender is fitted and have a multimeter, try the following:
- Fill car up fully with fuel.
- Measure sender resistance with multimeter.
- If the measured value is around 66.5 Ohms, the correct sender is fitted and the problem lies elsewhere.
- If the measured value is around 209 Ohms, the wrong sender is fitted, from a 34L pre 04/2002 car.
There's more information here. http://www.a2oc.net/forum/showthread.php?19558-Fuel-gauge-swap&p=149511#post149511
Regards,
Matt.
Last edited:
6stings
A2OC Donor
Thanks, Matt!
The 8Z0919673F is what I need!
I see now I should scroll down the parts list on the PartsBase to find it
Unfortunately, I can't find the old pump anywhere, the sender on it was perfectly fine.
I don't remember throwing it into garbage last year, but my garages are in total chaos since I've been changing floors and windows, machines, saws, wood, at least 10 sets of wheels, windows, doors...
€65 for a new sender, that's about €100 delivered.
Alright.
The 8Z0919673F is what I need!
I see now I should scroll down the parts list on the PartsBase to find it
Unfortunately, I can't find the old pump anywhere, the sender on it was perfectly fine.
I don't remember throwing it into garbage last year, but my garages are in total chaos since I've been changing floors and windows, machines, saws, wood, at least 10 sets of wheels, windows, doors...
€65 for a new sender, that's about €100 delivered.
Alright.