About Robert Greenfield Expertise I can answer any question pertaining to B5 model Passats short of automatic transmission rebuilds. I may be able to field some questions about other late model VWs with crossover engines. I do not address performance modification questions.
Experience I have been doing all my own work on my two Passats for a decade. I have been giving sound repair advice on PassatWorld.com for the past few years.
Education/Credentials No relevant auto related degrees unless a BSME counts.
Expert: Robert Greenfield Date: 12/3/2007 Subject: Checking engine light alert
Question I have an used 2000 volkswagen wagon GLX car (mileages is about 110,000. The checking engine light and the Emission Workshop alert come on. It has the 2.8 liter V6 engine. First a repair stuff help me to turn off the light. While after driving about 60miles, it appears again. During my driving I can not feel anything. But from low speed to high speed, I can hear a scream sound. During the stable speed driving, it seems OK. What cause this problem?
Thanks
Answer Sorry for the late response. There are lot's of reasons why the check engine light an come on. It just means that the ECU had bad readings reported to it by one or more of the many sensors. Do you have the codes that were read from the ECU? If its P0421 and P0431, this is caused by a threshold error in the ECU and can be fixed by reflashing the ECU.
