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Vacuum Tube Wiring

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Old 05-17-18, 09:49 AM
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gabesc300
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Exclamation Vacuum Tube Wiring



I found this, but it's blurry, and I'm not able to read it very well... I also don't know if this is for the VVTi engine or the non-VVTi engine.

Hi, I've posted previously on this forum about some valve cover gasket maintenance and I needed some guidance on the vacuum hose wiring on a 1993 SC300 with the original engine. When I took out the throttle body and y-pipe from the intake, I noticed that there were around 11 vacuum hoses connected to the intake. There were about 7 behind the y-pipe and around the EGR. I'm completely lost on where to connect what. When I took out the previously mentioned intake parts, I did not think to label ALL the tubes (I labeled some of them, mainly the ones I could see right on the throttle body) and some of them would have been almost impossible to have labeled without taking out the y-pipe anyway. I wish I had done more research . Are there any sources showing the vacuum hose wiring? Does anyone know the wiring?
Thanks for your time

Last edited by gabesc300; 05-17-18 at 10:04 AM. Reason: Adding photo
Old 05-17-18, 12:01 PM
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CoOl21
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Here you go~
out of the 1993 SC300 manual

Old 05-17-18, 12:13 PM
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gabesc300
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Originally Posted by CoOl21
Here you go~
out of the 1993 SC300 manual

Thank you! Is the manual free online?
Old 05-17-18, 02:41 PM
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CoOl21
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unfortunately no... got it from "Library"...

Last edited by CoOl21; 05-19-18 at 09:17 AM. Reason: reasons
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