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Is The Boost Solenoid Dead?

igor

By igor,
in Engines & Forced Induction

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igor Rising Star

igor

Posted
Posted

Hmmm.... Yeah... This is on R33 Gtst.

I tried to rewire the bleed valve my car came with and hook up the stock solenoid as a fuel consuption experiment. I hooked up everything to the solenoid and went for a drive. There was no wastegate at all :D The boost just went through the roof. I tried swapping the hoses on the solenoid but to no avail.

This is a diagram of how I did it.

  ___
|   |--
|   |    --> to wastegate
|   |--
|   |
|   |
|   |
|   |--
|   |    -->  -------T-------- --> (cant remember)
|   |--              |
|   |                |
|   |                | --> (cant remember)
|   |
|___|

Where it says (cant remember) on the diagram:

* One is where the bleed valve is hooked up at the moment

* Another is blocked off at the moment.

I am at work so I cant check any ideas straight away.

Does this sound like the solenoid is gone? Makes sense to me. If the outlet is blocked off then the wastegate would get whatever pressure is in the hose (athmospheric most likely) and will keep boosting. Can I take it apart and fix it?

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https://www.sau.com.au/forums/topic/83551-is-the-boost-solenoid-dead/
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MANWHORE Grand Master

MANWHORE

Posted
Posted

Mate, I don't know what you're trying to do, but i have a few pointers.

The solenoid itself is quite restrictive, and does not let much air through.

Also, I don't know if you've like hooked it up to power etc, but just try it. Get a bit of vaccuum hosing, and blow on it when the solenoid is open and closed to test it.

igor Rising Star

igor

Posted
  • Author
Posted
id just pick up anorher solinoid dude.

Hence the sig :D I figured people should have trillions of them lying around after fitting aftermarket boost controllers. Blowing into it? Hmmm... I m not sure itll prove anything.

someonestolecc Grand Master

someonestolecc

Posted
Posted

Blowing into the solenoid will test you've plugged it up the "right way" (i.e. for the air flow to be going the right way).

Just blow into the side your intercooler/pressure is coming from and stick your finger over the hole going to your wastegate actuator.

If you can't feel it then it's wrong and try the other way.

  • 2 weeks later...
Sydneykid Grand Master

Sydneykid

Posted
Posted
Hmmm.... Yeah... This is on R33 Gtst.

I tried to rewire the bleed valve my car came with and hook up the stock solenoid as a fuel consuption experiment. I hooked up everything to the solenoid and went for a drive. There was no wastegate at all :D The boost just went through the roof. I tried swapping the hoses on the solenoid but to no avail.

This is a diagram of how I did it.

  ___
|   |--
|   |    --> to wastegate
|   |--
|   |
|   |
|   |
|   |--
|   |    -->  -------T-------- --> (cant remember)
|   |--              |
|   |                |
|   |                | --> (cant remember)
|   |
|___|

Where it says (cant remember) on the diagram:

* One is where the bleed valve is hooked up at the moment

* Another is blocked off at the moment.

I am at work so I cant check any ideas straight away.

Does this sound like the solenoid is gone? Makes sense to me. If the outlet is blocked off then the wastegate would get whatever pressure is in the hose (athmospheric most likely) and will keep boosting. Can I take it apart and fix it?

You have it plumbed the wrong way around. The top fitting on the R33GTST solenoid is the input (boost supply), the bottom fitting is the output (to the wastegate).

:( cheers :)

igor Rising Star

igor

Posted
  • Author
Posted
You have it plumbed the wrong way around.  The top fitting on the R33GTST solenoid is the input (boost supply), the bottom fitting is the output (to the wastegate).

:D cheers  :(

Yeah, I am pretty sure I tried both ways, but i'll give it another go.

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