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Thread: want to run closed loop but wont

  1. #1

    want to run closed loop but wont

    something is keeping me from running closed loop. I must have missed something. would someone take a look and see? (the short section in closed loop was forced using the scanner) THANKS
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  2. #2
    Also does anyone know how to get access to the pressure sensor settings in a FSCM? I'm getting a P2635 after installing a 450 fuel pump

  3. #3
    Tuning Addict 5FDP's Avatar
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    What is the passenger side o2 sensor doing?

    You are not logging it, so I don't know if it's even working.

    You set all your o2 sensor codes to no error reported, that isn't smart if you ever want to know if you have a problem with the sensors. Both must be working to allow for closed loop.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  4. #4
    Sorry u may need a lil info, single turbo only using driver's side O2 sensor 1

  5. #5
    There are only 3 DC tables on the FSCM, is this right? How can I get access to the other tables? This is an 08 Silverado

  6. #6
    Tuning Addict 5FDP's Avatar
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    My first post has your answer. You need both primary o2 sensors for closed loop. Otherwise it's open loop forever.

    I can't help with the FSCM question.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  7. #7
    Wow did not realize that, thanks