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does anybody know what this is?

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    does anybody know what this is?

    hello bf owners, recently bought a 323 bf gtx and noticed that one vacum hose in the engine bay wasn't connected... ive attached a pic circled in red, the unit has a adjustable spring of some sort, does anyone know the purpose of this unit and where the hoses are meant to be connected to? - one goes to the inlet but unsure about the other?
    Attached Files
    Last edited by familia_uk; 08-12-2012, 11:07 AM.

    #2
    Ok, so it MAY be different in your country but that looks to me like the solenoid valve for the vacuum switch valve. If one side is still connected to intake then the other side WOULD be connected to a small round, flat and black vacuum switch valve.

    The reason it would be unplugged is that the vacuum switch valve is what turns on the overboost warning buzzer in the cabin at 12lbs of boost(don't know your metric conversion). So a previous owner had prob turned the boost up a little, gotten annoyed with the buzzer every time he throttled up and just unplugged the hose to stop the sensor from going off
    "See that car, in the 80's that car was deadly." Random man to his son while passing the GTX in a parking lot

    Originally posted by neuspeedescort
    the proper spelling would be "Launchabilitiness" i do believe.
    -88' Mazda 323 GTX, 1.8t, Modified Magazine May 2012
    -88' Mazda 323 GTX, caged and ready for dirt
    -93' Mazda Miata, half caged
    -09' Mercedes C63 AMG
    -87' Toyota Land Cruiser, 33's with slight lift, safari style!

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      #3
      thanks for the reply, however still unsure where the hose with the arrow pointed goes onto?

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        #4
        can you get a picture of the other end of the hose?
        Ian Boyd- Bellingham, WA (click vehicle to view)

        1988 BF GTX

        1990 x2 BG AWD Protege

        1991 Escort GT- SOLD

        1975 911 S Widebody 3.6 conversion

        2005 Corolla

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          #5
          Originally posted by familia_uk View Post
          thanks for the reply, however still unsure where the hose with the arrow pointed goes onto?
          This is the idle regulator valve. This valve let your idle stable once you turn on your lights, ac ... so one pipe goes into the intake as the red one and the blue one shoule go before the Throttle (neer the dump valve outlet)
          The screw let you to tune the valve. You have to tune to have no variation of the idle speed when you turn on electrical equipment.

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