I have been having a bouncy idle and chronic CEL for quite some time now.
I have a cracked coilpack that needs to be replaced and with that i'm going to do spark plugs and wires as well. I replaced all that stuff less than a year ago but just went to pepboys for everything so sure enough the coilpack crapped out on me and i don't particularly trust the wires either. Back on my old cracked for now but like i said i plan to refresh all that stuff with good quality parts soon.
That said, i've also been dealing with another trouble area that i think could be contributing to my car's illness.
I noticed there is a good amount of oil/grime around the heating element at the joint of the pcv breather tube and the throttle body intake tube that comes right after the maf.
There is also oil on my valve cover.
Also, i have noticed a slight hissing noise from around the pcv breather tube area.
So i just ordered and replaced the oil filler cap, the pcv check valve, the pcv breather tube, and the line that goes from the throttle body back to the pre-throttle body intake tube, right below the main breather tube, where the heating element is.
Before i replace that thinner line i noticed it seemed cracked and when i covered that area the hissing seemed to stop.
However i put new line in, but the hissing persists. It goes away when i squeeze that line though.
I'm not sure if this hissing noise is just a noise the pcv system makes normally, or if there is a leak somewhere i still haven't found. Could the joint with the heating element, where the breather tube and that thinner line meet the intake tube be faulty? Could the oil on and around it be an indicator of that?
I hope not, that intake tube is like a 200$ tube if i recall correctly : /
In addition, i'm noticing a lot of oil that seems to be leaking from my valve cover. Not sure if that is related to anything or not.
Pic of said joint right before the throttle body.