Question about Audi A4
Sounds like you have a plug wire or coil pack going bad. It will eventually set off an engine code so it will help you narrow down which cylinder is missing.
Posted on Oct 19, 2013
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Posted on Jan 02, 2017
RPM's up and down check EGR valve and sensor. EGR valve and sensor control idle. That's why your getting the surging on rpm's and this could be giving out the other codes. If mass flow was bad car will not start and the same for the map sensor. O2 sensor measures gas and air for right mixer. TPS controls 0-60 speed as in throttle respons.
Posted on Apr 28, 2009
I HAD THE SAME PROBLEM WITH MY CAR. 93 LS 400. THAT WOULD BE YOUR FUEL FILTER OR THE FUEL PUMP GOING BAD. TRY CHANGING THE FILTER FIRST. THE DEALER TRIED TO CHARGE ME $980 TO CHANGE FUEL PUMP.
Posted on Jul 23, 2009
Hello. I had the same problem when the Check Gearbox light came on, it would be very sluggish. It turned out to be a small sensor in the transmission that lets the car know what gear it is in. It started to go out slowly and only sometimes would send the information.
Posted on Jul 26, 2009
it'll either be your ignition system (spark plugs, distributor cap, etc) or more likely your fuel system (most likely your fuel pump or your fuel filter)
Posted on Sep 10, 2009
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