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idle surge

  1. I4/I5 Engine & Drivetrain
    I’ve been getting an intermittent P0171 code. I’ve cleaned the MAF & MAP with MAF cleaner, TB with TB cleaner, replaced the upstream O2, and sprayed starter fluid all over and can’t find a leak. I’ve reset the PCM a couple of times by removing the neg terminal and removing the PCM B fuse. But...