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loose vacuum hose

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Old Jun 7, 2008 | 10:27 AM
  #1  
HasseO's Avatar
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Car: -88 TA GTA
Engine: 350 tpi
Transmission: TH700
loose vacuum hose

Hi,
Today I discovered a vacuum hose that should connect somewhere....
Its by the firewall on driver side connected to a small 3-way check valve I think. Hose is 40-50 cm long or so. One of the other connecting hoses leads forward past the canister into a T. The remaining one is thinner and is hooked up alonside the firewall then disappears into a wire loom. There is the letter P on the valve...
Car is an 85 carbed, lg4

anybody?
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Old Jun 7, 2008 | 05:01 PM
  #2  
HasseO's Avatar
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Joined: Sep 2003
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Car: -88 TA GTA
Engine: 350 tpi
Transmission: TH700
Re: loose vacuum hose

valve looks something like this
Attached Thumbnails loose vacuum hose-mtr47150003.jpg  
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Old Jun 7, 2008 | 08:11 PM
  #3  
Damon's Avatar
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Joined: Sep 1999
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From: Philly, PA
Re: loose vacuum hose

The hose that disappears into the wiring loom goes through the firewall and supplies vacuum to run the HVAC vacuum servos and such under the dash to direct the air to blow out of the vents you select on the dash slider.

The other goes forward to the driver's front corner to the vacuum reserve canister (round plastic ball inside the driver's fender) and the cruise control unit, if your car is so equipped.
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Old Jun 8, 2008 | 02:37 AM
  #4  
HasseO's Avatar
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Joined: Sep 2003
Posts: 260
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Car: -88 TA GTA
Engine: 350 tpi
Transmission: TH700
Re: loose vacuum hose

Great! But what about the third one thast is still loose? Its about 50cm long and has been connected somewhere I can tell from the hose end...Its on the "back side" of the valve.
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Old Jun 8, 2008 | 11:35 AM
  #5  
HasseO's Avatar
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Joined: Sep 2003
Posts: 260
Likes: 1
Car: -88 TA GTA
Engine: 350 tpi
Transmission: TH700
Re: loose vacuum hose

Think I found it... Vacuum port behind carb in the intake. used to be plugged...Now Ill see if I can revive the cruise control.
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