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Author Topic: Vacuum line help- what is this and where does it hook to?  (Read 11658 times)

Offline 9511234

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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.

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Offline zieg85

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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
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Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline 9511234

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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?
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Offline TexasRed

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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.
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Offline VileZambonie

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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.
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Offline 9511234

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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?

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