Fuel gauge not working properly

Asked by Oct 12, 2017 at 01:09 PM about the 2002 Audi TT 1.8T 225hp quattro Coupe AWD

Question type: Maintenance & Repair

Had fuel pump replaced in my 2002 audi Quattro last week since then petrol
gauge keeps changing as to how much fuel I have and I have put £50 petrol
in to do a 60 mile journey but my Guage goes from empty to full and I
between and then it tells me I need petrol

2 Answers


Was the pump new or used? I can't remember for sure, but the sending unit may be attached to the pump, so it's possible your "new" pump has a bad sending unit. Here in the states we have a fuel additive called Chevron Techron that some people have said will clean the sending unit so it will register accurately.

1 people found this helpful.

your fuel reader in the tank is the likely culprit. Had the same issue with my 1998 audi. after a few years the wire on it in the tank rots off. you can do one of 2 things repair it or get a new one. I recomend a new one but fixing it can get you by a while longer. Just take it out and resolder the wire back on and it should work properly again. replacing it with a new one will make it work lke new tho.

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