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My daughter took her Cruze to a local oil change spot. While there they sold her a engine air filter and a cabin air filter. Now she has a check engine light. THe car was hard starting 2x and hesitates.Advance auto read a P0171 fault code. Any ideas?
 

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Make sure the oil fill cap and dipstick is seated properly. If either one is leaking air, you'll have problems. That would explain why it happened right after a oil change.

Another possibility is that the PCV died. That's covered by power train warranty. That happens a lot on a Cruze. In that case, I think the oil change was coincidence.
 

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Not a Cruze but I had an incident where they dislodged the intake hose from the throttle body when they were taking the air filter cover off. Immediately set a code and made car have very uneven acceleration. There was no airflow past the MAF sensor.
The moral of the story here is just do a careful examination and make sure everything is buttoned up tight.
 
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