Question about 2004 Audi A4
Engine management light & esp light have come on, engine has started running rough. when I switch car off & then on the esp light goes off. the engine still misfires but then soon after starting the esp light comes on again making the car to shake violently. please help.
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Posted on Jan 02, 2017
SOURCE: audi a4 engine management light
Go to AutoZone or Advance Auto Parts and have them scan the ECU (they do it for free, where a shop will charge you). They'll give you the codes, and you can post them here. Once you do that, I can help you narrow it down.
Posted on Aug 07, 2008
I had the same issue with my '05 A4 1.8T. Turns out it was the RPM sensor. Audi tried to tell me it was teh fuel pump and the cam-shaft positioning sensor. Paid for teh fuel pump replacement and it died 6 blocks from the dealership. Then they replaced the RPM snesor, works great now... Except it's still an Audi.
Posted on Apr 19, 2009
SOURCE: 2001 audi a4 CEL came on
I would start with the cylinder 4 spark plug and make sure it look good and is firing correctly. After that I would look either at the final coil, ignition module and then o2 sensor. These problems are so hard to diagnose and are trial and error so much of the time.
Posted on May 19, 2009
It sounds more like you've got an intermittant vacuum leak. Try, with the engine running, spraying some WD-40 or any kind of penetrating lubricant spray,over the intake manifold area and any related vacuum lines. If you hear the engine strat to stumble, providing you're not shooting directly into the air box, concentrate the spray on that area until you're able to pinpoint a loose, cracked. or off, vacuum line or hose.
Posted on Aug 22, 2009
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