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International Automotive Technicians Network
Re: Open loop
Posted to Technical Discussion Forum on 4/26/2024

I see this issue on the Cruze all the time, where the PCV diaphragm ruptures. I can't say I've seen one that went into open loop; usually the STFT will be maxed out at idle.

P.S. Fixing this is a gravy job. You need to also check for a missing check valve in... Login to read more.