Tip & How-To about Audi A4

Audi A4 Fueling

I learned recently from a customer that on the Audi A4 1.8T (and possibly other models of Audi) - when fueling, make sure the fuel cap is turned (tightened) at least 4-5 times to ensure the seal is good. Otherwise, the check engine light will come on and the pressure (lack thereof) in the tank will affect the performance of the engine.

This may be true as well for other makes an models of other brand vehicles.


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1 Answer

audi a4 fuel gauge stuck on passed max

not sure about the model but usually the gas tank or fuel filter has a float on it that is probably ur problem u would have to drop the tank to find out lot of trouble for a little fix or it could be the gauge itself like a bad connection

Jul 23, 2012 | 2001 Audi A4

1 Answer

Fan noise

Electric fan on the radiators since 1980. Would be worried if not kicking in. Fuel cap? Other problem. Go ask for a litle check up
with reputable dealer. German cars break down more often then japanese. Fact. Unless Mercedes.

Apr 08, 2009 | 2003 Audi A4 Cabriolet

1 Answer

Cant open fuel filler door,where is the switch?

I have a 97 and there is no release for it. Just push on the right end of the gas cap door to open it. Hope that helps.

Apr 07, 2009 | 1997 Audi A4

1 Answer

Engine has miss-fire

First check spark plugs/wires/distributor cap (tune up). Also would be good idea to use fuel injector cleane and change fuel filter and O2 sensor.
Hope that helps
Good Luck

Mar 22, 2009 | 2003 Audi TT

1 Answer

fuel cap light

You need someone with VAGCOM (the VW/Audi diagnostic software) to turn the light off. Try to find an independent Euro shop rather than a dealer, as they generally charge less. The previous owner of my A4 had to pay an hour's labor for them to turn off an airbag light (a 3 minute procedure).

Aug 02, 2008 | 2002 Audi A4

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