About John Nelson Expertise All questions on Volkswagen 99.5-present A4 Jetta,1998-present Passat
All Touregs 1998-present Beetle 2003-present Beetle Converible. Please no A3 or B4 body style. fOR TECHNICAL ANSWERS I NEED THE VIN#. Or year, engine,make and model. Please be discriptive so I can help the best way possible.
Experience Six years at a quality analisis program dealership.
Education/Credentials AS degree of automotive science.
Awards and Honors Volkswagen Expert level. ASE Master Auto Technitian, L1 Certified. 2008 Certified.
Expert: John Nelson Date: 4/20/2007 Subject: 2001 VW Jetta 1.8T
Question All of the sudden my check engine light is flashing and my car has the rotten egg smell, too. I saw the recent post on this but wanted to ask you specifically about the 1.8T. Little power. I just had a mass air flow sensor replaced 2 or 3 months ago. Have 108K miles. Any ideas?
Answer You have a Misfire fault. A P0 300, 301,302,303,304 code set in the computers memory. The smell is raw gas being dumped into the exhaust. The gas is shut of when the computer sees a misfired cylinder. Shuts fuel off to one cylinder. Most common cause is a secondary ignition coil, Some times the throttle body, May be bad or sometimes cleaning it helps. Then a Vacuum leak after the mass air sensor. Good luck.
