Volkswagen beetle fuel gauge - adjustment and repair
Diffferent voltage stabilizer (fuel gauge regulator) gives different values
The fuel gauge tends to show incorrectly. You can easily fix a mass problem yourself
It is more than that, not everyone has the skills or the equipment to carry out the repair.
In addition, the spare parts available on the market (transmitter, constant, display) show a high degree of creativity in the technical execution and even the original factory parts are different. We tested and compared it
Different fuel tank senders gives different values up to +/- 20%
What we do
Adjustment
The three components- fuel sender, voltage stabilizer and gauge are matched to each other. If one is replaced, the display sometimes only works imprecisely. But simply corrosion can also lead to incorrect displays.
There is a need to repair / adjust the units
We check, test and adjust your components. By matching our reference values, we ensure that the fuel gauge shows correct.
If the sent voltage stabilizer is defective, we will rebuild it in exchange. The original look is retained. Our offered fuel senders are precise and tested by us.
Fuel gauge before adjustment
Fuel gauge after adjustment (only adjustment – no broken parts)
What we did before
I didn’t know before that the tank is full at 35 liters (short front end). 40 liters go in. Then the fuel is in the filler neck and the ventilation hoses. The tank sender itself is already completely filled with fuel at a level of 35 liters, which has no effect on the function.
We tested and compared the components individually using our test setup. This is how we determined the sometimes large differences. We use an original VW VDO tank sender from 1969 as a reference.
So we were able to find the correct values. Our parts gurantees the correct adjustment to OEM. Using our fuel sender and voltage stabilzer correct function is guaranteed for this parts.
Our test setup. We filled the tank in 5 liter increments and determined the output values of the different senders.
Level at 35 liters content. Really full to overflowing. The sender is completely in the petrol. Of course it smells like petrol when more comes in and not everything is tight
Filler neck on the tank at 35 liters level. Every additional liter is in the hoses and above the tank sender.
Original Volkswagen VDO fuel sender from 1969. Serves as a reference with an original voltage stabilizer (electro mechanical type) and speedometer with display
We have compared three other, different fuel senders to our original VDO encoder.
Comparison of two original Volkswagen voltage stabizers of different designs and one from after sales market.
Original Volkswagen OEM. Electro-mechanic with bimetal
Original Volkswagen OEM with Sulfitte (lamp).
No name actual, direct bought from China. Resistor and diod
Wie ist der Ablauf?
Ihr schickt uns den Tacho komplett (oder nur die Tankanzeige) mit Konstanter und den Tankgeber ein. Wir überprüfen die Einzelteile auf ihre Funktion und Genauigkeit. Wir machen Euch einen Kostenvoranschlag über Ersatzteile und die Reparatur.
Habt Ihr schon neue Komponenten gekauft und es funktioniert doch nicht – bitte mit einschicken.
Wollt ihr dann die Reparatur nicht bei uns durchführen lassen, fallen einmalig € 17,50 für die Überprüfung, den Befund und den Rückversand an.
Deckel zum Verschließen das Tanks nach Ausbau des Gebers
Einfach die Gummidichtung unter dem Tankgeber als Vorlage verwenden. Wir brauchen die Gummidichtung nicht.
Es muss ja nur für ca. 1 Woche halten. Einen provisorischen Deckel zuschneiden und damit die Öffnung verschließen.