idle rpms dropping
 

my rpms sometimes drop to around 600 when idling in drive foot on brake, there is also a chirping noise with the low, it idles at like 700 when in P or N, only does this sometimes, no codes and drives great in other rpm range, non FSI so no carbon issue, beginning of bad coil packs maybe?

i would have said engine mounts but u said there was chirping so im not sure