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Getting intermittent P0137 and P0157 codes: Cats or Sensors or?

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Old Nov 24, 2015 | 06:11 PM
  #11  
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Looks like I got the other lean codes as well that I wasn't getting before (P0171 and P0174).

I am leaning heavily towards intake mani gaskets. When it got a little warmer here (was 64F in Denver), it didn't stumble so much at startup.
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Old Nov 24, 2015 | 06:17 PM
  #12  
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Oh....my fuel trims are pretty whack too. Bank 2 is anywhere from 15-25%, and bank one is around 10%.
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