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Vacuum Hose ID - 86 Automatic

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Old Aug 18, 2015 | 07:35 PM
  #1  
bob928s3's Avatar
bob928s3
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Default Vacuum Hose ID - 86 Automatic

86 Automatic
Can someone ID where this Vacuum Hose Attaches? to 6 Way Splitter? EZF Control Unit Connection at Splitter? AT Modulator Connection at Splitter?
Hose runs horizontally along passenger firewall and then descends longitudinally to the right of block.
Thanks so much,
Rob




Hose ID? Where does it go - ezf control unit?<br/>Hose descends right of block





Hose ID - runs horizontally along firewall<br/>Does it go to 6 way Splitter - EZF or AT Connection





Hose ID - another picture
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Old Aug 18, 2015 | 11:05 PM
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Pull your airbox, you will see the other end below it where it broke off.
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Old Aug 19, 2015 | 11:11 AM
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bob928s3
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Hi Sean,
Thank you for your reply. Does it then connect to the nipple on right side of airbox?
If so, then where does the other end lead to? Charcoal Canister?,?
Thanks so much.
Rob
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Old Aug 19, 2015 | 11:56 AM
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There are no vacuum lines that connect to the Airbox.

Like suggested you need to REMOVE the lower Airbox to see anything back there.
As seen here the 7 way spliter feeds the three Fuel Rail pods, the AT, the EZF and the pod on the cross bar (fuel tank vapor).

Well I tried to remove that large attachment and resize it, but can not find out how to remove it
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S3 Vacuum.jpg (1.17 MB, 1031 views)
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Old Aug 19, 2015 | 10:16 PM
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Probably goes to the fuel pressure regulator (8), or possibly the little EGR switch (13). But I think the regulator. There is some variability on the location of the damper v. regulator on some model years.

And on the pass side by the fender, likely the diverter valve (12)- though the feed to the LH ECU is under there as well.

What the heck is (14) called?

I do wish I hadn't gone over to the hard vac lines.
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Old Aug 20, 2015 | 11:49 AM
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bob928s3
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Thanks for all the responses. As I had a fire, the vacuum hose was melted, and was not evident.
The hose goes to the 7 way splitter (position F) and to the EZF Control Unit (25 Pin). Only 1985 and 1986 (
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Old Aug 20, 2015 | 12:11 PM
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Originally Posted by SMTCapeCod
Probably goes to the fuel pressure regulator (8), or possibly the little EGR switch (13). But I think the regulator. There is some variability on the location of the damper v. regulator on some model years.

And on the pass side by the fender, likely the diverter valve (12)- though the feed to the LH ECU is under there as well.

What the heck is (14) called?

I do wish I hadn't gone over to the hard vac lines.
14 is the larger Black plastic vacuum valve in front of the water expansion tank on the right front fender.
Its part of the fuel tank vapor system.
As far as I can tell it's controlled via the water jacket temp sensor(13) on the rear of the right cly head.
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