SparkyLU26

Just a quick question, truck idles normally at around 600 but when I'm sitting there parked with it idling every so often there will be a sort of "rumbling" feeling. The RPMs don't change at all, but I can feel a heavier shake for a couple seconds then it goes away. Is this normal?

bluefox_gt

If its a 5 liter my does that too. if you feel its something strange take it in and get it checked.

odd-6

Does it sound like your AC compressor kicked in? That could be a cause for the sputtering feeling its causing a load to be applied to the motor at a very low RPM and when the compressor kicks out your RPM goes back to normal as the load is no longer applied. That's my guess on a brand new truck that your still getting use to.