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The mkiv Supra Owners Club

Idle up valve for the power steering system


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Hi all,

On big single builds do people retain the idle up valve for the power steering system?

I'm debating ordering one as mine is broken. (picture attached).

I believe this needs a vac line before and after the throttle body to work?

Vac Line.JPG

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On 11/9/2020 at 12:06 PM, Konrad said:

If it helps, when I installed 1uzfe in mine, i got rid of this valve and just blanked a hole. All is good.

Interesting, I think more people have done this too.

Do you have any issues with dry steering vs the engine idle speed?

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On 11/10/2020 at 8:34 PM, Mugello said:

Interesting, I think more people have done this too.

Do you have any issues with dry steering vs the engine idle speed?

In 1uzfe conversion world most people blank it, saves them trouble with valve failing and spreading oil everywhere. I had no issues or noises when turning wheels when stationary, revs drop down a fraction, but way above stall point.

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2 minutes ago, Konrad said:

In 1uzfe conversion world most people blank it, saves them trouble with valve failing and spreading oil everywhere. I had no issues or noises when turning wheels when stationary, revs drop down a fraction, but way above stall point.

Thanks for the reply - Good to know. Do you typically blank it off with a bolt?

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