I took a break while the bluetooth OBD2 scanner (BAFX Products) came in the mail. This is my first time using it so I ma not sure if I have recorded the best information. It seemed to me that the O2 sensor data best reflected the fluctuations seen (rpm) and heard in the engine.
Tests: Most tests were green. There were many blanks I guess because it's an older car. The only red test was the following: Rich to Lean sensor switch time (calculated). This test was red before starting up the engine. I am not sure how relevant it is. I was expecting some of the tests to change or update somehow but they didn't. I am guessing the vacuum was around 17 most of the time (forgot to check it at the end of the run). I am not sure how to check trim values unless what was meant by that is the O2 sensor data.
When I ran the test plugged into the Pontiac G5, it seemed to be running continuous tests on the test screen but this didnt happen on the Grand Prix. I am not sure if I missed doing something or the car is too old. The Grand prix also is not at full running temperature (closed loop). I am not sure if it would be best to have some data at that time, but by that time the Alternator is ready to melt. I am willing to download plugins or perform any further suggested tests. For some really bad looking data check the last minute of video.
I am hoping that someone can help me out here. I have documented this as best as I can in the hopes that others will be able to learn from the troubleshooting steps and the resolution.
Thanks again.
