Update: the MAF sensor has been replaced and works properly. It helped with the problem a little bit... It's less harsh and takes more speed and sharpness to cause it to bog down. And the engine no longer shakes at all durring. It's back in right now to get the O2 sensors and wire harness checked. Looks like we're on the right track. It seems the running rich problem is a factor in this issue

 

The O2 sensors were tested and my mechanic said that he doesn't see any malfunctioning in the harness or sensors. He said they give a steady 900 mila volt signal and no evidence as to why their getting a running rich signal. Any possibilities? I'm going to try to contact pcmforless about the issue for any help

 

Was the fuel pressure measured during a test drive when the problem occurs?
Does it still have the issue when turning right?

 

Oh yes sorry I forgot to add yes the fuel pressure test was fine. And also with the o2 sensors I forgot to add the signal is around a constant 900 millivolts. It's not occilating like its supposed to. My mechanic is going to call the tuning place and get back to me. And yes so far it's still only right turns but it had gotten a little better...

 

Steady 900mV is pig rich if it's at idle or part load. You generally only see the O2 sensors reading that high (steady) in WOT/PE mode, with the stock, overly rich 11.8:1 target A/F ratio.

 

Im not sure if its 900mV at idle... I didnt ask. But i do know it reads that rich at 900 driving around, gassing and braking and turning and the sort.

 

Yeah, it's not supposed to be doing that.