Idle speed control valve HELP

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Thread: Idle speed control valve HELP

  1. #1
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    Idle speed control valve HELP

    Hey guys I could really use someone's help I swapped a jdm 7MGTE in my 89 turbo supra this past winter, got it up and running then when we took it to get tuned it started idling crazy and had a bad vacuum leak, we searched around couldnt find it so we pulled the manifold off to check everything put a new I/M gasket on. now were putting it back together and we cannot find where the line that runs from the bottom of the IDLE SPEED CONTROL VALVE either im stupid or were just missing it, ive searched and searched for diagrams and nothing.

    its the line that runs out of the bottom of the ISCV


  2. #2
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    anyone???

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    92 1JZ Supra Twin2Turbo's Avatar
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    you cant find where it goes?
    92' All Options Shadow Grey
    |AEM V.2|PT6262|Caged|Sumped Fuel System|Meth Injected|1JZ|

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    Overlooked bassjunkiens5's Avatar
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    Moderator SideWinderGX's Avatar
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    OP, are you talking about the long black hose running vertical in the picture, past the intake manifold? It's a coolant line...there's only one place it can go where that hose can reach on the intake side of the engine.

    Both of the black 1/4" hoses that go to the ISCV are coolant lines. The giant fat hose is a vacuum line. 17344 in that cygnus link is another vacuum line that is in front of the intake manifold.

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    its not the 17344 one. and yes it is the one that runs vertcal down past the runners of the manifold. i cannot find a diagram or anywhere this goes, i knew it was a coolant line i just cant find where

  7. #7
    Moderator SideWinderGX's Avatar
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    Only thing I could find is this link, maybe it'll help, can't find it in cygnus...

    http://www.toyota-supra.info/forums/...e-replace.html

    Really it shouldn't be harder than seeing if there are any open pipes anywhere in that region and smelling for coolant.

  8. #8
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    found it ! thanks for the help guys. hope to have this damn car running this weekend

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