NewEdgeJed

So I just barley noticed that my car has this slight shudder, feels like a misfire when the engine is warm. Not throwing any codes either. I've been reading other posts and have seen a lot of the solutions leading to a bad/unclean IAC valve, I cleaned it all up, checked all connections and can't seem to figure it out. The thing that is bothering me the most is that this car is basically brand new. Only 11,000 miles on it, everything is in great condition, so Im wondering on what could be wrong. I bought the car from some guy who died family, and it could have sat for a while. Ive heard that the IAC valve can go out pretty quick, is there a way to check if its bad? Does anyone know some things for me to go through and check? Thanks in advance.

jwog666

the iac will not cause a miss at idle, so forget that. dirty injectors, dirty spark plugs, faulty coil pack, or water down in the plug wells are common.