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Author Topic: Help identifying this part?  (Read 5982 times)

Offline K10NM

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Help identifying this part?
« on: September 01, 2011, 01:48:58 am »
Hey all, i was hoping someone could help me identify this: http://www.use.com/68a0f6d4e8660678aab3#
I think it's a vacuum switch, but what is it used for and operate?
Thanks in advance!
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85 Chevy K10
9" of total lift, 6 susp., 3 body
35x12.50x15 BFG all terrains
Shaved handles, tailgate, mirrors
Custom interior

Offline K10NM

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Re: Help identifying this part?
« Reply #1 on: September 01, 2011, 02:58:40 am »
Sorry, it's an 85 Chevy K10, 350ci, 700r4.
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85 Chevy K10
9" of total lift, 6 susp., 3 body
35x12.50x15 BFG all terrains
Shaved handles, tailgate, mirrors
Custom interior

Offline muddpuppy01

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Re: Help identifying this part?
« Reply #2 on: September 01, 2011, 04:38:07 am »
could  be you lock up switch for the 700r4 how is your hooked up now

if it is you need to get a manifold vacuum to there
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Offline joesgarage71

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Re: Help identifying this part?
« Reply #3 on: September 01, 2011, 07:30:00 am »
 In the TECH section should be wiring diagrams for your truck showin this part.
 Steve
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Offline Grim 82

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Re: Help identifying this part?
« Reply #4 on: September 01, 2011, 10:00:06 am »
It is the low vacuum switch for your trans, and yes it needs manifold vacuum. It unlocks the TC when you mash the gas and create a low vacuum signal.
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Offline K10NM

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Re: Help identifying this part?
« Reply #5 on: September 01, 2011, 03:59:25 pm »
Thanks everyone for the input! Guess I'll trace the wiring and see if it is plugged up to the transmission, and if so, guess I'll get some vacuum going to it. Thanks again for the help!
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85 Chevy K10
9" of total lift, 6 susp., 3 body
35x12.50x15 BFG all terrains
Shaved handles, tailgate, mirrors
Custom interior

Offline VileZambonie

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Re: Help identifying this part?
« Reply #6 on: September 01, 2011, 09:14:26 pm »
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Offline VileZambonie

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Re: Help identifying this part?
« Reply #7 on: September 01, 2011, 09:35:51 pm »
As you can see from the link I posted above that is not the low vacuum switch for the trans. The vacuum switch on the pass side of the firewall is the tip in vacuum switch for an ESC spark ignition system. The low vacuum switch for the torque converter clutch lock up is behind the brake booster on the drivers side and looks similar.
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,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

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

Offline Grim 82

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Re: Help identifying this part?
« Reply #8 on: September 01, 2011, 11:24:52 pm »
Good call Vile. I stand corrected.

Ditch that ESC ignition  ;)
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Give a man a gun, and he might rob a bank. Give a man a bank, and he might rob the world.

Offline K10NM

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Re: Help identifying this part?
« Reply #9 on: September 01, 2011, 11:54:58 pm »
Thanks Vile, saves me some time trying to follow the wiring and/or trying to hook it up! Really enjoying this forum, it's been very helpful with a lot of the things I've done to my truck! Thanks again.
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85 Chevy K10
9" of total lift, 6 susp., 3 body
35x12.50x15 BFG all terrains
Shaved handles, tailgate, mirrors
Custom interior

Offline Grover 1

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Re: Help identifying this part?
« Reply #10 on: September 02, 2011, 11:36:34 am »
I just got rid of my ESC ignition on my '86.  Put a new distributor and Q-jet in.  I eliminated more unneeded wiring and possible headaches down the road.  I did a complete makeover under the hood.  Pictures coming this weekend.
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Offline Irish_Alley

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Re: Help identifying this part?
« Reply #11 on: September 03, 2011, 12:49:12 am »
Quote from: Grover 1 on September 02, 2011, 11:36:34 am
I just got rid of my ESC ignition on my '86.  Put a new distributor and Q-jet in.  I eliminated more unneeded wiring and possible headaches down the road.  I did a complete makeover under the hood.  Pictures coming this weekend.
que?
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