Rough idle, what is this pvc tube called?

Maintenance/Repairs
1

So my car check engine light has been on for a while, but it runs smoothly. This morning it was cold as, and the car started up roughly. Jolting etc, but only on idle. When I accelerated it ran smooth.

I took out all the ignition coils and checked each one, they look fine. The spark plugs are only 6 months old. But I noticed this pvc tube that had a shoddy repair done to it. It looked like it cracked and someone glued it, and now it has cracked again.

Any idea what the tube is called exactly? So I can order a replacement. http://imgur.com/a/HbUJ2bJ

2

Near as I can tell, That tube looks OK, it’s the busted up PCV valve that looks bad.

3

Have you bothered to get the codes read? Most autoparts stores will do that for free. Be sure to record the code, it will be a P followed by 4 numbers, i.e. P0300. Report that code here nad you will get a lot more help.

4

That is the “breather” tube or “make-up air” tube, it is part of the positive crankcase ventilation system.

5

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P2178, P2189 with P0300 would lean towards a vacuum leak?

The battery is pretty new and good quality, can’t see how the voltage would be too low unless something is draining it (the AC?)