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25 Posts
Okay so I have a 2011 Chevy Cruze ltz 1.4 98xxx miles recently the valve cover/pcv went bad causing misfire and idle surging. I repleaced it and the code p1101 came up so I replaced the mass air flow sensor and it didn't go away. After reading around on here I saw there was a problem with a check valve in the intake on these cars. Mine indeed was missing so I replaced the intake manifold 315 dollar part. Still the code came right back. Found out here is a second check valve on the pcv tube (Air charge bypass tube). Mine was missing cause I could blow both ways in the tube. So I bought a new one and it solved my CEL code but now the car idle jumps up in down from 600 to 800 every time the car is idling. Put the old one back on and the idle is fine at 800 with no jumping around but the check engine light comes back immediately. Anyone had this problem before? Any imput would be great. Thanks