Question about 2001 Audi A4
Hello! There is contamination in the tank...It really does not have a whole lot to do with the octane of the gas...Performance drivers use 93 most all the time...Its the compression ratio of the engine that decides the octane...9.5-10/1 compression ratio requires it...There are two engines for the vehicle...1.8=9.5 to 1 ratio...2.8=10.3 to 1 ratio...This means you should be running 93 octane...Now about the contamination...Safe to drive home...Fuel filter needs to be changed...Running the tank to empty, then filling, probably knocked loose contaminants...Also stop by an Autozone, Napa, or Advanced auto store and pick up a fuel filter...Also buy a can of SEAFOAM...It's the best cleaner that I've ever used...Cost is $10 a can...Pour it in the gas tank...Changing the filter may not be enough...Worse case would be to have the gas tank removed and cleaned...However , the chances are good that it will clean up...Codes should clear once clean fuel reaches the combustion chamber...If not..........
To clear the codes...Disconnect the + terminal of the battery for 15 minutes...Then re-connect...BUT BEFORE YOU DO...Take a cigar lighter plug...Match polarity...Connect a new 9 volt battery to the proper terminals (outside spring is ground (- terminal))...Plug it into the cigar lighter plug...BEFORE you disconnect the battery...The 9 volts will keep your stereo powered up...So you don't have to worry about a radio code...
Send a comment......Guru..............Saailer
I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867
Posted on Jul 27, 2010
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Posted on Jan 02, 2017
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