2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

vac hose routing question...89 non turbo

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Old May 3, 2005 | 12:18 PM
  #1  
elfking's Avatar
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vac hose routing question...89 non turbo

So I just want to check before I go throwing the lower and upper intake manafolds back on there that I have things squared away under.



That missing hose above I believe is this one here below:

Another shot:


The FSM diagrams/Haynes diagrams don't really cover this big hose, they mostly cover all the small vac lines. (Hey no one is perfect.)

So It looks to me this routes out around the manafolds and plugs into the plastic piece which goes after the AFM and before the TB. One of these two:


I hope I am not too mixed up here. Can someone confirm this for me?
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Old May 3, 2005 | 01:03 PM
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cbrinega's Avatar
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From: Dayton, Ohio
Yes, you are correct. The hose you are connecting goes to the lower tube on the air intake. The upper (shorter) hose goes to the BAC valve.

P.S. That last photo is a picture of my car! (I'm glad someone found it useful.)
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Old May 3, 2005 | 02:06 PM
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elfking's Avatar
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From: Sonoma, CA
haha well thanks for the info and I was lucky enough to come across you're picture so I could figure out where it went. I like the service manuals for the most part but they lack in detail in some areas. Hope you don't mind me using the picture in such a way.

I guess the only thing left pissing me off about the manual at the moment would be in this picture:

I know its hard to see but at the bottom there is a blue vac hose (cut off by the bottom of the picture) looping back to the small vac line right next to it. When I got the engine it was this way however I know its wrong. So I need to figure out where those connections should be routed...

If anyone knows off the top of their head or has a better diagram I havent seen yet please let me know!

Thanks again for the response.

Originally Posted by cbrinega
Yes, you are correct. The hose you are connecting goes to the lower tube on the air intake. The upper (shorter) hose goes to the BAC valve.

P.S. That last photo is a picture of my car! (I'm glad someone found it useful.)
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