« previous next »
Pages: [1]   Go Down

Author Topic: Vacuum line help- what is this and where does it hook to?  (Read 11652 times)

Offline 9511234

  • Newbie
  • Posts: 32
Vacuum line help- what is this and where does it hook to?
« on: May 22, 2011, 06:05:48 pm »



I thought the vacuum line to the temp sensor on the air cleaner was where it hooked up.

However looking at vacuum diagrams I cannot find it, and I think it tees off a line running to the carb, unless I'm missing a switch somewhere.

Logged

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7600
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: Vacuum line help- what is this and where does it hook to?
« Reply #1 on: May 22, 2011, 06:46:47 pm »
It is for the lock-up torque converter on your automatic transmission
Logged
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline 9511234

  • Newbie
  • Posts: 32
Re: Vacuum line help- what is this and where does it hook to?
« Reply #2 on: May 22, 2011, 07:26:18 pm »
Quote from: zieg85 on May 22, 2011, 06:46:47 pm
It is for the lock-up torque converter on your automatic transmission

Do you know if it ties to air cleaner or carb?
Logged

Offline TexasRed

  • Junior Member
  • ***
  • Posts: 727
Re: Vacuum line help- what is this and where does it hook to?
« Reply #3 on: May 22, 2011, 07:42:44 pm »
Looks like a switch for an ESC controlled distributor to me. What year is this for? It'll tie to the manifold vacuum port either on the carb or intake.
Logged

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19210
Re: Vacuum line help- what is this and where does it hook to?
« Reply #4 on: May 22, 2011, 08:24:04 pm »
Look at this schematic. See the tip in vac switch? Provide more information on your truck please.
Logged
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 9511234

  • Newbie
  • Posts: 32
Re: Vacuum line help- what is this and where does it hook to?
« Reply #5 on: May 22, 2011, 10:13:58 pm »
Sorry- should put it in my sig.

1985 C10 305

This is pic of vacuum diagram as it is on the frame.

Is it the tip in vac sw?

Logged
Pages: [1]   Go Up
« previous next »