For the past few years my ZX2 would always shake when it was idle ( a common problem) but it never really bothered me. A couple days ago while driving home my Check Engine Light came on and when I put the car in park it sounded like it was almost trying to die on me, however it never did.
I took it to a local shop and they pulled the code which said it was a PCV issue. They ended up replacing the PCV Elbow and it seemed fine. It acted a little strange the next day, when I put it into park a few of the dashboard lights would pop up then dissapear when I restarted the car. I took it back up to the shop and they could find absolutely nothing wrong.
Ever since getting it back it has ran great and I have had no more issues, I have noticed though that the engine is now extremely quiet and the car no longer shakes when idle. Is it normal for a new PCV Elbow to cause the engine to sound much quieter and smoother? Thanks