Rough Idle On 01 Astro

GUY'S I NEED YOUR HELP AGAIN. MY 01 ASTRO 71K MILES IDLES ROUGH
WHEN IN DRIVE AT A STOP SIGN BUT IF I PUT IT IN NEU IT SMOOTHS OUT.THE GUY AT THE LOCAL AUTOZONE SAID I SOULD CHANGE THE SERP BELT, I TOOK A LOOK AT IT AND IT LOOKS LIKE IT'S IN GOOD CONDITION.
I RECENTLY REPLACED THE PCV VALVE BUT IT DID NOT MAKE A DIFFRENCE.:banghead:

If they have it your area try running a couple of tanks of Chevron or Texaco gas to clean the injectors and carbon out. If you cant get Cevron gas you can by their additative Techroline by the bottle and add it to the gas. My wife was complaining about having to restart her Astro when cold and rough idleing while driving and a tank of Chevron fixed it. Cheap fuel is just that, I only run Chevron or Texaco gas. Chevron bought Teaxaco and they now have Techroline in their gas too. I swear by it for use in the 4.3 carbon mills.

Hey tinysvan (http://www.automotiveforums.com/vbulletin/member.php?u=447490), any luck in fuguring out that idle problem? Kind of sounds like mine.

not yet, the more i drive the van it seems more like a vibration problem
rather than a idle issue. i am going to check the motor mounts to see if that is the problem.