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79 spirit,heater core,just warm air! |
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amc401t10 
AMC Addicted 
Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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 Posted: Feb/07/2016 at 11:52am |
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Sat 3-4 years
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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304-dude
AMC Addicted
Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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Posted: Feb/07/2016 at 12:19pm |
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Check the heater valve vacume line, or possible bad diaphram. For good measure, I would replace the valve as dry rot may come to play.
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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Mr. Ed
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Joined: Nov/12/2010 Location: Sewell, NJ Status: Offline Points: 4916 |
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Posted: Feb/07/2016 at 2:17pm |
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So, is it safe to presume you blew the heater core out and you are still not getting heat?
Later! Mr. Ed |
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2014 Jeep Grand Cherokee Laredo "Gwendolyn."
1978 Concord Sport coupe "Mr. Black". 1982 Concord wagon. The Admiral. FOR SALE! 1976 Sportabout X, 304, auto, air. The Bronze Goddess |
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amc401t10
AMC Addicted
Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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Posted: Feb/07/2016 at 6:57pm |
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Clr flush then blew core out, both hoses get hot, too hot to hold very long.
It's something in the black box,when I mess with the air ,def,heat selector it gets hot . And the cool to hot lever attaches to a lever on side o f box and I can c it moving. |
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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Mr. Ed
Supporter of TheAMCForum
Joined: Nov/12/2010 Location: Sewell, NJ Status: Offline Points: 4916 |
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Posted: Feb/08/2016 at 9:10am |
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Yep, sounds like the box has to come out. While it isn't difficult, it is challenging. If you do not have a TSM, get one. It outlines the procedure, right down to loosening the dash on the passenger side.It will take a few hours to accomplish the task. But while the box is out, you will probably need to replace the sealing foam in there. You can make your own out of the correct thickness foam using double sided tape.
Later! Mr. Ed |
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2014 Jeep Grand Cherokee Laredo "Gwendolyn."
1978 Concord Sport coupe "Mr. Black". 1982 Concord wagon. The Admiral. FOR SALE! 1976 Sportabout X, 304, auto, air. The Bronze Goddess |
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amc401t10
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Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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Posted: Feb/09/2016 at 12:54pm |
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Going to leave it alone for now, lube the cables, check for vac leaks ,
Vacuum the box as best I can, and c if it gets any better, if not I'll pull it before carpet and pkg tray install. |
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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