2011 Terrain gauges bounce to zero and vehicle hesitates while driving

JMaynard72

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I hooked up my code reader to it and only got codes for bad O2 sensor bank 1 sensor 1 and the P0420 catalytic system efficiency codes. I replace both the upstream and down stream catalytic converters and both O2 sensors but it is still doing the same thing. Any ideas are appreciated. It is the 2.4L engine.
 

ThatCanadianGuy

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Usually its the maf ( Mass airflow sensor )Sometimes u can run it without it pluged but some vehicles wont start without it plugged. but take the maf out get some cleaner for it 10 bucks for the cleaner and clean it maybe try changing your air filter to and or just take it out for a couple miles to see if it runs okay
 
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