I changed out my PCV valve...it was needed...bad. It didnt make much of a differance in the feel of the car and how it performs. The car still hesitates a little bit in the lower RPM ranges...any idea?

New MAF - done
New KS - done
New Spark plugs - done
New PCV valve - done
New Fuel Filter - done
New Vacuum hoses - done
No codes being thrown, with the exception of the EVAP line code. Ill change that hose eventually.

I have heard of this problem happening on a few maximas, and it does need to be solved. Any more ideas?

 

check coil packs with multimeter.

 

clean throttle body? Check TPS?

 

Checked coil packs, and they are all fine. Throttle body I havent cleaned yet, but I also havent had the time...I will try that as soon as I can. TPS is what?

 

TPS = throttle position sensor.

The coil packs typically fail under load - so this might be your problem.

Definitely give the TB and IACV (idle air control valve) a good cleaning first.