Turbo Pressure

Discussion in 'Technical' started by JBZ, Jul 17, 2005.

  1. JBZ

    JBZ New Member

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    Hi,

    A friend of mine has just got a 89 300zx TT Manual. The turbo pressure will build up fast but once it gets to positive pressure it sounds like the stock BOV's are releasing the pressure. So it only get to about 2psi.

    I've had a look and couldn't find any pipes out of place. Does anyone have any other suggestions?
     
    JBZ, Jul 17, 2005
    #1
  2. cbzx

    cbzx cbzx

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    The car needs to be up to temperature

    To start with,Use the tech section and search to access the ecu fault code system .Also TT net.com is very helpful.
     
    cbzx, Jul 17, 2005
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  3. ZDUCTIV

    ZDUCTIV Active Member

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    As above, check codes.

    ECU Diag
    Do as above, but connect the pins with a paper clip or similar.

    Report back.
     
    ZDUCTIV, Jul 17, 2005
    #3
  4. BlueZ

    BlueZ Oldie but a goodie

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    Almost certainly a boost leak

    you will need to pressurise the plennum (blow up the motor) to find it/them.
    See Ya,
    Garry
     
    BlueZ, Jul 17, 2005
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  5. BlueZ

    BlueZ Oldie but a goodie

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    But also could be...

    On further thought, if the vacuum lines are disconnected/broken/misconnected , particularly the one/s to the wastegate, you'll get almost no +ve boost.
    See Ya,
    Garry
     
    BlueZ, Jul 17, 2005
    #5

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