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Old 01-23-2024, 01:40 PM   #6
Danimal
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Join Date: May 2023
Location: Oakland, CA
Posts: 144
Quick update. I decided to start my pulling and cleaning the throttle body. That way there would be more room to look around for anything obviously wrong.

The throttle body is dirty (64K and probably never cleaned), but pretty clean from behind the valve and through the intake manifold. There is some oil, but I think it is acceptable. The PO said the AOS was replaced at some point. Please let me know if this amount of oil looks troubling or not.

There was also a strong gas smell from inside the intake. You could immediately smell it after removing the throttle body.

That said, there is damp residue all over the lower pivot for the resonance tube valve. I've read this could be power steering overflow and there is a small old gooey puddle of it in one of the crevices on the block. Do you think this valve could be my vacuum leak? Or this is just old power steering fluid?
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2001 Boxster S | Triple Black | Stock 17s | Bilstein PSS9s | 9x7 Shift Console

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Last edited by Danimal; 01-23-2024 at 01:51 PM. Reason: added more information
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