xvvvz
08-01-2008, 08:42 AM
For techies only - this video link was posted on another forum and I found it very informative. The video is about how an oscilloscope can be used to diagnose MAF and O2 sensor problems, but in order to explain things he has to cover how the MAF and O2 sensor work in tandem. It may seem dry at first, but as he goes through you start to get a feel for how the sensors work. You learn what the "slow to respond" trouble code signifies and why it is bad. For those with supercharged cars, he does a nice job of explaining the underlying need for the bypass valve from a fuel mixture standpoint. This guy is the kind of detail oriented indy mechanic we all wish we could find to work on our cars.
http://www.picoauto.com/automotive-oscilloscope-guide/lambda-sensors.html
http://www.picoauto.com/automotive-oscilloscope-guide/lambda-sensors.html