...especially during left turns.
Car doesn't want to start half the time. When engine turns over it'll try to catch but only does half the time. Idles and runs smooth as long as throttle is under approximately 33% or in a right turn.

Fuel pressure is is good.
repaced ignition control module.
Have an auto tap to determine that:
IAC, TPS, MAF, and IAT all read normal.

knock sensor retards a couple of degrees of timing when enough throttle is given (anything over 33%) to make the car stumble when parked, accelerating straight, or in a left turn (where no throttle is required to make the engine stumble then quit).

While in the stumble the front O2 are reading 0.01xx volts.

Where to go from here?

 

anyone have a clue here?

 

no misfiring codes or readings, opti replaced approx. 15000 miles ago

 

I just got my entire ignition system replaced. The only problem I have is when I try to floor it, it just backfires and sputters, but I can ease into it then floore it and it's fine. I have a light for EGR, it might be the culprit. I have block off plates, just don't have enough time to install them. I hope it fixes my problem.

 

Took apart all the grounding terminals for the ignition and cleaned them along with the contact surface they mate to, and replace the coil wire.
Problem fixed!