Hey guys,

I'm new here and a new Ram owner. Its a 2002 1500 V8 5.9L. Anyways, just recently when i'm stopped at a light my RPM will fluctuate. I'm not sure at the moment exactly how much because i'm stuck in the office but it is at least by a couple hundred. Anyone have any ideas? Thanks a lot.

Idle Air Controller, it's mounted on the throttle body next to the throttle, take it out and clean it (Don't take it apart) also clean out the throttle body while you are there.

If that doesn't fix it, replace it

edit, if i recall it's held in by 2 torx bolts, and is on the back of the throttlebody where you can't see crap, also don't over-tighten it, the throttle body is only aluminum

my 4.7 does the same thing