This is a datalog from my srt-4. I was having a misfiring problem.

this is a recording of me using autotap to diagnose a bad o2sensor on my 1997 GMC sonoma 4.3 5spd.

Todays cars are controlled by a Powertrain Control Module (PCM), your engines computer. If you want to repair or modify your cars performance, you need a scantool to communicate with the PCM. Symptoms: Check Engine Light on Poor Acceleration Poor Fuel Economy Rough Idle Probable Cause(s): Oxygen Sensors Codes (P0130.... more