Interesting idle phenomenon
 

Okay so sometimes when I come to a stop light, my car starts to thump, almost like a heart beat. I have no CEL and the tons don't fluctuate. Any clues?

Turn the sub down.............

haha that's pretty funny, but yeah it's definitely not that.

My car is still acting up, every now and then when I cruise to a stop light,once I stop the car throbs. Any ideas?

Turn off the ac.......

Clean the throttle body and I'd be surprised if that doesn't fix it.

Try cleaning the throttle body and mass aif flow sebsor first. If that dont cut it replace the vacuum libes, that did it for me

The throttle body is actually only a few months old, MAF sensor is probably the culprit. Can it also be the plugs misfiring or not gapped correctly?