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  1. General Maintenance, Troubleshooting & Accidents.
    I have a CEL and 3 codes come up. A P0171, a P0134, and a P1700. The main issue is the engine running lean. Any idea on how to fix this? I put on the resonator after removing it to clean it and that didn’t fix the issue (CEL did come before that was removed), I changed the gasket for the BOV and...
    cel cel codes check engine lean code o2 sensor
  2. General Maintenance, Troubleshooting & Accidents.
    nvrmind
    #roughidle engine rebuild lean code lean condition vacuum leak
  3. Engine Performance
    I have an 03 wrx with a lean code that popped up. I got the car smoke tested and the only leak we found was under the maf sensor on the housing, so I bought a Perrin maf housing and put it on. When I drive AFRs are normal, but when I stop for any reason they go up to 17afr-18afr-19afr. I have...
    lean code
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