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Author Topic: Thermostatic switch  (Read 5593 times)

Offline eventhorizon66

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Thermostatic switch
« on: April 21, 2008, 06:38:08 pm »
I was just curious.  Is it necessary/best to run a thermostatic switch on the vacuum line that runs from the purge control valve of the EVAP canister to the ported vacuum?  I am not running any other form of emissions equipment that would require one.
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'85 C10 SWB 350 700R4 TKO600

Offline VileZambonie

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Re: Thermostatic switch
« Reply #1 on: April 21, 2008, 08:28:02 pm »
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Offline eventhorizon66

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Re: Thermostatic switch
« Reply #2 on: April 22, 2008, 02:03:37 pm »
So that's a yes?  OK, to be clear, which of my first two attached pics is the correct valve?  Based on the diagram, I'm leaning toward the first one.  If so are the hookup labels in my third attached pic correct?
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'85 C10 SWB 350 700R4 TKO600

Offline choptop

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Re: Thermostatic switch
« Reply #3 on: April 22, 2008, 05:03:17 pm »
That hurts my head :'(
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Offline Fordeatinz71

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Re: Thermostatic switch
« Reply #4 on: April 22, 2008, 05:10:00 pm »
yea, mine too.  my truck is gonna be "mostly" original, but i'm simplifying that vacuum diagram.  that's a bunch of garbage.  i will have vacuum for the bare essentials and that's about it...
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1991 Chevy Silverado K1500 ECSB, 350, 700R4 w/shift kit, 3.42's, exhaust work...
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Offline eventhorizon66

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Re: Thermostatic switch
« Reply #5 on: April 29, 2008, 03:12:15 pm »
Bump.  Hey Vile, is my vacuum hookup (third attachment above) correct or am I looking at the diagram backwards?
« Last Edit: April 29, 2008, 04:07:34 pm by Captkaos »
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'85 C10 SWB 350 700R4 TKO600

Offline Lt.Del

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Re: Thermostatic switch
« Reply #6 on: April 29, 2008, 04:01:46 pm »
see if this spins your head around...

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Offline eventhorizon66

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Re: Thermostatic switch
« Reply #7 on: April 29, 2008, 06:06:41 pm »
It looks like the fitting your holding in the pic is for the spark advance/EFE.  I'm interested in the one that regulates the EVAP canister/EGR valve, which appears to be the one mounted directly in the manifold.  My valve for '81-up trucks is different from yours.  But thanks nonetheless, Sarge.
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'85 C10 SWB 350 700R4 TKO600
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