Vboost doesn't work?

Discussion in 'VBoost Room' started by daniel.gomariz.hernandez, Mar 9, 2020.

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  1. Mar 9, 2020 #1

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

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    Hello all,

    This time I don't want to ask for help, just share my experience in case I can help others.

    My Vboost was not working all the time, sometimes not even when starting it. I though it would be due to the sensor or any other mechanical issue. One day, because of a different issue I upgraded my battery to a Gel one, and now Vboost works spotless!!

    Previous battery was good enough to start the engine, but not enough to power the whole bike.

    Cheers,
    Daniel
     
  2. Mar 9, 2020 #2

    desert_max

    desert_max

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    So your previous battery had enough current to crank over the engine, but not enough to power the Vboost controller and servo? That doesn't sound right to me...

    Either way glad you have full power all the time now!
     
    putin likes this.
  3. Mar 9, 2020 #3

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

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    You are 100% right, that is way I never thought that would be a solution for the issue. Anyway I'll continue looking for the "bug", it is an '85 bike, needs a lot of love.
     
  4. Mar 9, 2020 #4

    one2dmax

    one2dmax

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    Flex or bend the main vboost control box and see if it tries to work. They are common to get micro cracks in the solder requiring either replacement or you can try to remelt the solders (mostly where the wires entire the board) to restore function.
     
  5. Mar 10, 2020 #5

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

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    I'll try. Thanks mate
     
  6. Mar 28, 2020 #6

    02GF74

    02GF74

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    curious if you have any update on this as it seems I am in the same boat.
     
  7. Mar 29, 2020 #7

    redbaron13

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    I had to push on chips in the board until the choosy would cycle.
     
  8. Mar 30, 2020 #8

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

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    For me Vboost valve continues failling, havent had the opportunity to follow one2dmax instructions yet.
     
  9. Apr 8, 2020 #9

    02GF74

    02GF74

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    1. start off by cleaning all the pins on both connectors - unlikely to be the cause

    2. check that there is 12 V on the 3 pin connector - black = 0V, brown = 12 V (yellow is ignition coil - ignore that)

    3. narrow down the problem to the module or the servo - the wiring for the 5 pin connector is in my thread below.
    you can safely apply battery voltage to the two power pins, one way is motor forwards, reverse the voltage to make the motor go the other way.
    https://www.vmaxforum.net/threads/who-knows-about-vboost-wiring.48610/

    4. if that works, then the problem is in the module - take it apart as in this thread:
    https://www.vmaxforum.net/threads/fixed-my-vboost-module.48623/
     
  10. Apr 9, 2020 #10

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

    daniel.gomariz.hernandez

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    That is a enormous piece of work and helps a lot to all of us, Thanks!!

    As soon as I test it I will comunicate the community.

    Thanks again!
    Daniel
     

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