idle issues need ideas
first off if this is the wrong area forgive me, anyways, I have a 2000 Camaro ss, when the car is cold theres no problem, once the car warms up coming to a stoplight where I idle for a while, I can feel a shudder, or comparing to what ive felt in the past maybe a misfire, not constant, its kinda random when it happens but a little shudder that you can feel in the brake pedal and steering wheel, also you can hear it in the exhaust note like a puh puhpuh puh puh pretty quiet nothing like a shotgun backfire sounding thing, ive changed the plugs and wires, and it didn't change anything, I thought it might be the egr maybe was stuck open, but I cleaned that and that didn't change anything either, I need some other direction to go or help if anyone thinks this sounds familiar