[Josiah_melchert]

My 2011 Chevy Cruze 1.4lt sometimes has a rough idle but not always. The code it throws is p0131. I've changed the o2 sensor and that did nothing. The valve cover was just replaced and so was the pvc pipe that goes to the turbo. If someone could help me figure this out it would be appreciated! Thanks guys!

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[Josiah_melchert]

Before shotgunning any more parts get this thing attached to a tech II.

Verify that the coolant sensor readings are being reported.
If the sensor sends disrupted info, for example, low coolant temperature, the air fuel mix will be disrupted rich.
This will set pre cat o2 codes.......but it is the o2 trying to tell you something is amiss upstream.

BTW.....my response IS based on your being certain the cooling system is full......RIGHT?

Rob

Yes my coolant is full I will get it attached to a tech II. Thanks!

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[Josiah_melchert]

There's also a orange check valve in the manifold. If that's gone, then it will put excessive stress on the valve cover PCV.

Where is that located?

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[Josiah_melchert]

In the intake manifold where the corrugated tube to turbo went. it may be covered in oil after all those years so you may need to spray it with intake cleaner to find it.

What do I do if the check valve isn't there?

Sent from my SAMSUNG-SM-G930A using Tapatalk