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secondary turbo making making no boost

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Old 05-30-07, 09:57 PM
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Unhappy secondary turbo making making no boost

Hey everyone I recently had done a vaccum job on my car. When i put it all back together when i went to go test drive it my first turbo would boost just fine to 10 psi then around 4200 RPM when my second turbo was coming on it made this loud loud air noise and my boost falls flat. Im hoping its just something i forgot I hope you guys can help thanks.
Old 05-30-07, 10:37 PM
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anyone
Old 05-30-07, 10:46 PM
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The problem is mate,,, it can be a whole host of things you need to have a read here and start a little learning:-
http://www.autosportracetech.com/RX-...leshooting.htm

But using what i know,, you are saying you are getting a large rush off air when secondary kicks in so i beleive you got a leak on the secondary set up. I would definatly look at the airbypass valve and the relating pipe work and electrical solenoid that controls it becuase it sounds like its not closing when it should to me.
Old 05-30-07, 11:12 PM
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actually looking at that it looks like it would be my charge relief valve but i dont know it seems wierd.
Old 05-30-07, 11:14 PM
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oh yeah and thanks for the link man im buying a charge relief valve right now. Does anyone else have any other ideas
Old 05-30-07, 11:16 PM
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You need to make sure the charge relief solenoid has the correct vacuum routing and that the solenoid itself works properly. Rarely to the valves go bad. Even so, you can swap it with the stock BOV for testing but I'll be the problem isn't the valve itself.
Old 05-31-07, 07:43 AM
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Mahjik is correct ,, its rarely the valve that breaks,,, i beleive there's something wrong with the pipework or the electrical solenoid relating to that valve.
Old 05-31-07, 09:12 AM
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yeah i thought that it was something I would have done during the vac job like connecting a line wrong because it worked before. The vac line going to the valve was pinched badly with the old lines and is it possible that thats the reason why it worked before. Also what solenoids should I look control the charge relief valve?
Old 05-31-07, 09:41 AM
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Originally Posted by zack4173
Also what solenoids should I look control the charge relief valve?
The Charge Relief Solenoid:

http://www.fd3s.net/vacuum_hose_diagram2.jpg

Make sure you have the proper routing for the lines as well. The lines goes through the LIM so make sure those are properly routed from both sides.
Old 05-31-07, 07:17 PM
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hahaha i got it I put one of the charge relief solinoid vacuum lines on wrong. I fixed it and now it works perfect thanks guys
Old 06-01-07, 02:26 PM
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Another happy customer! your welcome
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