my moms car hasnt been running right, its got a slight miss, but otherwise runs fine. ive changed the plugs, fuel filter twice, seafoamed it. also when you go to pass someone under hard acceleration, it revs up, and then falls flat on its ass, and misses like hell til you let off the throttle, then back to normal after that. with my new scantool i view the live sensor data, though the software i have limits what i can view, i need to get better software as i cant view the mfg specific PID values. though i was able to view the o2 sensors readout as it was running. and these graphs are what i got, the top is pre cat, the bottom is post cat.
presently i suspect a faulty pre cat o2. her car has a little under 100k miles, only owner. its a pontiac aztec fwd 3.8l v6
what do you guys think?
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