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Thread: How override enable fuel pump three second timeout

  1. 09-25-2021 #1
    Martinle
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    How override enable fuel pump three second timeout

    Hey Guys, I have a 2017 ZL1 Camaro. I have to drain the fuel tank. When I go into the fuel system and enable the fuel pump (MPVI2), it only runs for three seconds. I cannot find a way to disable the timeout. I would appreciate any help. Thank you.

    Martinle
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  2. 09-25-2021 #2
    danmw2003
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    Might have to do it manually by other means. Not sure that you can command it on continually till you shut it off.
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  3. 09-25-2021 #3
    Martinle
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    Thank you.
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  4. 09-27-2021 #4
    village_idiot
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    I would use a fuel pump relay bypass switch. Having a set of those comes in very handy.

    Tune wise though, you should be able to look in...

    Fuel System > Fuel Pump > Prime Time (ECM 7012) - Stock this is 2 seconds. You can change it between 2 and 410 seconds
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