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PSA: 7/19/2018, check your PCV TUBES, most likely cracked/rotted after 8 years, PICS.
PCV tubes
1. “U” from valley cover to intake manifold.
12594779 $6-8
2. Tube from valve cover to rubber coupler between MAF and TB
(it’s actually the rubber elbow that rots on this one)
$20
the U tube if cracked or broken will cause erratic idle and major drive ability issues. It’s an oddball 7/32” formed tube that
is only a few bucks new.
I ripped mine in 2 when swapping the great LSx oil sensor on my 07 after 140k miles.
Hope this helps, being how cheap these parts are, it just makes sense to replace.
thanks Steve, I was checking engine over tonight looking for leaks or anything out of place. I found the PCV tube from the valve cover to the MAF disconnected. I replaced the air intake a while back and must have pulled it loose then. And thanks for the heads up on the other tube as well.
2006 LS2
07-20-2018, 03:40 PM
PSA: 7/19/2018, check your PCV TUBES, most likely cracked/rotted after 8 years, PICS.
