Ok, thanks Guys is a AUTOZONE brand fuel filter ok or is it better to go AC DELCO? plugs AC delco as well? How do you clean the MAF SENSOR?

 

Most of the time we try to stick with OEM brands as you stated --AC.
The suggestions to replace the plugs is one of the most likely to be causing some problem.
In spite of the claim of 100,000 mile spark plugs that is stretching it quite a bit. The engine will run , but it will run much better if the plugs are changed around the 50,000- 70,000 mile mark. Of course the newer Iridium plugs will perform much longer than the standard plugs.
Let us know if you notice the difference after you change the plugs. Also, if not careful when removing the wires they can be damaged internally and you could have problems you did not have before. You don't have to replace the plug wires , but it is something to consider as long as you are in there with the miles that are on them.
Make sure you check the plug gap as they are not all set to the proper gap when manufactured. The correct gap should be on the underhood label.

 

thanks! the easiest way to decribe the problem is if you were go up and down on the gas pedal, the idle goes up and and down and up and down it will go away if you give it some gas, and it smoothes out.

Would a MAP sensor cause this? No check Engine Light, I did Have a CE code for O2 sensor (bank 1 sensor 1)something with heater circuit, I cleared it and it has not came back after about 300 miles.
so far new TPS, Cleaned TB, New IAC, pvc valve, pcv elbow. new egr valve and cleaned passages as where blocked.

>Next to try Fuel Filter, Plugs, wires, clean MAF sensor