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vacuum line connections - what goes where

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Old 05-04-2010, 09:49 AM
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vacuum line connections - what goes where

i'm unsure where the vacuum lines go, mainly concerned from the a/c vacuum tank. it has 3 vacuum ports, 2 of them are going into the intake manifold (i have the non egr manifold) and the top one is not connected to anything. where does this one plug into and do i have the other 2 connected correctly?

thanks
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Old 05-04-2010, 04:25 PM
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Year?
Turbo or N/A?
Pics?

Have you checked out the FSM yet?
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Old 05-04-2010, 10:21 PM
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1979 n/a checked the haynes manual but couldn't find anything about it in there.
Attached Thumbnails vacuum line connections - what goes where-img_1323.jpg   vacuum line connections - what goes where-img_1324.jpg  
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Old 05-05-2010, 08:43 AM
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Yeah... you have those hooked up wrong.

3 lines on the vacuum tank:
-one goes to the vent selector in the cabin.
-one goes to the check port on intake.
-middle one goes straight to the intake.

The way you have the vent vacuum line from the intake, when you jam the throttle, all the vents will default to floor & defrost because there's no vacuum.

Scan from the Haynes / FSM:
Attached Thumbnails vacuum line connections - what goes where-280zx-vac.jpg  

Last edited by NismoPick; 05-05-2010 at 08:45 AM.
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Old 05-09-2010, 07:00 AM
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great, thanks for that. just what i wanted and yeah thats exactly what it does
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