IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: blown1 on February 02 2017, 01:28:50 AM
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more specfic, heat/air lines,
old stuff fell apart, was brittle,
so now trying to determine where it goes, and comes from
two lines from under heater box,
vac ball. check valves,
what feeds heater controls?
heater /water control vac?
what needs ck valve?
shoulda took pics......
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this looks right...you get this far and I will fill in the blanks...:)
http://www.justanswer.com/buick/6tcqw-buick-g-n-hi-ihave-1987-grand-national-turbo-need.html (http://www.justanswer.com/buick/6tcqw-buick-g-n-hi-ihave-1987-grand-national-turbo-need.html)
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I have that diagram.
I have deleted egr, and fuel vapor canister.
my issue is two small hard lines from under the heater / fan housing.
and what line goes to heater water temp control? ( from where)
should any ck valves be in line to interior, either boost gauge or heater controls?
also , not using waste gate solenoid, using RJC valve,
Thanks
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The longer line runs across the firewall to the outlet on the firewall mounted check valve that shows hvac on the diagram. The shorter line goes to the heater valve
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mine are broken off by the a/c box, so.. what I under stand is.
one is a feed line, and the other is only under vac when the heat control is turned on.
don't have a fire wall mounted ck valve
( the three way one?)
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You can find them in the Help section at parts stores..think I bought one on amazon.
You need that to keep boost out of the hvac system as well as keeping vacuum stored in the vacuum reservoir ball under the fender. No big deal on the two plastic lines...connec t them up and if the hvac does not respond, you have them backwards. I will try to look tomorrow and see if there is a way to tell them apart...I was thinking they emerged side by side.
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This is the one I ordered...don't know where I put it tho...some shelf, somewhere https://www.amazon.com/gp/product/B000CO93NO/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 (https://www.amazon.com/gp/product/B000CO93NO/ref=oh_aui_search_detailpage?ie=UTF8&psc=1)
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vac lines.... they do come out side by side,
ck valve, I have that one, and wondered where it went.
also have a single in/out ck valve, both on the bench, LOL
it the "map" sensor vac line just a direct connection? (intake to map sensor)
thanks for your help, been messing with these things for along time, but never got into
making heat/air things right, LOL
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yep, direct connection.
That link that I posted shows where the check valves go.
It's always fun to try to put stuff back together after it's been apart for a year, or more. :D that's a sure way to come up with extra parts
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Lee, How did they break?
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old, like me! :rofl:
and brittle, broke when touching them, all original,
I bought the car from my neighbor, who bought it new,
and that was about 20+ yrs ago,
my we4 finally used more oil than it leaked, so it was time for new motor,
problem was, took it apart, and can't remember where stuff goes,
its together and running (after 6 mos) but still have some small issues,
have brand new ac comp, dryer, recrimped the old ac lines at factory crimp , as
they were so loose , they had to leak,
went with 206 roller, (wow are TA hyd rollers noisy!)
big intake valves, etc,etc,
found a 911 converter (new in the box) stashed away in the garage,
so in it went,
haven't driven it yet ,as still hooking up scanmaster, exh temp gauge,
and all the gauges I installed years ago , and never got working,LOL
T60, alky, 009's, walbro, hot wire, moser axles, UMI lowers, and the list goes on............ ..
so where are you now, Robert? what are you doing, I see Len frequently,
and chat on facebook all the time with him,
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tell Len I said what's up! And that I'll never forget his kindness.
I'm on the MS gulf coast dealing cards.