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03-09-2004, 09:11 PM
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#1 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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Thrmostat housing question
On my thrmostat housing there is a tree screwed into the top will three little pipe fitings with nothing on them what are they?
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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03-09-2004, 09:18 PM
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#2 |
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Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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THOSE ARE.....
temp. controlled vacuum ports.... one would be vacuum in.... the other two would be.....temp. operated vacuum out... carb air cleaner flapper preheat door... egr valve..... the list goes on.... do you need emissions in your area???? how does it start cold???? might want to buy a manual for your truck...it will have a vacuum line picture so you can get it all hooked back up....if wanted 
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03-09-2004, 09:18 PM
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#3 |
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I'm back with 2nd truck!
Join Date: Feb 2002
Location: Texas
Posts: 3,774
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Those are for vacuum lines you once may have had from the factory. Most of us just replace the housing itself with a new one along with a new thermostat itself while you're there.
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1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson |
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03-09-2004, 09:24 PM
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#4 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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should they be capped with a line cover thing so they do not leak vac or since I have no vac in should be no problem right? No emission in may area.
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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03-09-2004, 09:25 PM
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#5 |
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I'm back with 2nd truck!
Join Date: Feb 2002
Location: Texas
Posts: 3,774
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With no vacuum supplying then you're fine.
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1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson |
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03-09-2004, 09:26 PM
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#6 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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it won't affec your performance running without them hooked up as they are just thermal switches. I gotta swap mine out tonight, I broke one of the studs off mine, doh!
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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