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Thread: Problems starting

  1. #1
    Advanced Tuner Ghostnotes's Avatar
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    Problems starting

    I'm wondering if anybody has had this same problem. I just finished putting everything back together from my super charger build and I go to start it after loading the new tune and the car does not want to start. I try to start it. I can hear the starter try to engage but not turn. After a few seconds it tells me that I have power steering issues and to check my charging system. I'm thinking that the charging system message is because the car thanks it's running, it does not see any charge output so gives me that Warning. I also could not disengage the parking brake. I made a short video that might help clarify some of it. One of the other reasons why I think that it's thinks that it's running Is because when I step on the throttle I can hear the throttle body opening and closing, Very strange.

    Kind of worried that the PCM might be toast but i can read/write with no issues.

    I pulled the codes and this is what came up. Key on engine not running.

    0x7E8: P0068 - MAP / MAF - Throttle Position Correlation (Permanent)
    0x7E8: P0103 - Mass or Volume Air Flow A Circuit High (Permanent)
    0x7E8: P0480 - Fan 1 Control Circuit (SES, Pending, Permanent)
    0x7E8: P0502 - Vehicle Speed Sensor A Circuit Low (Permanent)
    0x7E8: P0691 - Fan 1 Control Circuit Low (SES, Pending, History)
    0x7E8: P159F (SES, Pending, Current, History)


    I checked all of the fuses under the hood and in the rear.Are there any other locations?

    https://youtu.be/19bNHKa8rvM

    Thanks
    Last edited by Ghostnotes; 11-03-2018 at 08:36 PM.
    I always tune VVE....
    2016 C7 M7 Z51
    Callies ultra billet crank
    Callies ultra billet rods
    Diamond pistons
    Jhonson high speed lifters
    Ported and polished headwork
    Custom cam
    YSi-V7

  2. #2
    Advanced Tuner Ghostnotes's Avatar
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    Never mind I figured it out.
    I always tune VVE....
    2016 C7 M7 Z51
    Callies ultra billet crank
    Callies ultra billet rods
    Diamond pistons
    Jhonson high speed lifters
    Ported and polished headwork
    Custom cam
    YSi-V7

  3. #3
    Advanced Tuner
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    Central, LA
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    Was it a ground?

  4. #4
    Tuner
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    Quote Originally Posted by Ghostnotes View Post
    Never mind I figured it out.
    Please let us know what you found to be the issue so anyone who has the same issues can use your solution. Thanks

  5. #5
    Advanced Tuner Ghostnotes's Avatar
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    It was actually a loose connection.

    There is a terminal block UNDER the fuse block that had a loose connection. Totally unrelated to what i was doing, but probably got knocked around when i pulled my fuse block. What muddied the water was the fact that my Key Fob died (2016 C7?!?!?!?) at the same time all this happened and seemed to be part of the issue.



    All good now.
    I always tune VVE....
    2016 C7 M7 Z51
    Callies ultra billet crank
    Callies ultra billet rods
    Diamond pistons
    Jhonson high speed lifters
    Ported and polished headwork
    Custom cam
    YSi-V7

  6. #6
    Potential Tuner Greenesa's Avatar
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    Oct 2020
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    Brisbane
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    Can't say if they are related but who knows. My terminal block once got me in trouble because of bad connection. Wires got on fire and nobody was home, good my father came just in time and stopped everything. My music system was connected to the socket and the amplifier got burner with one headphone. On the kitchen fridge was damaged also as the microwave. We could lose everything. Good besides that nothing happened and my guitars are fine. Changed all the electronics inside the house and asked gerber files for new PCBs that could manage our home project. It works fine now for 2 years.
    Last edited by Greenesa; 12-12-2020 at 06:41 PM.