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10-25-2014, 06:04 PM
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#1 |
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Rottenwood Garage Member
Join Date: May 2005
Location: Marietta, Georgia
Posts: 4,321
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86 C10 climate control not changing possition
86 Silverado. New to me. The fan is working and the temp control is working but it will only blow out of the face vents. Wont change to floor or defrost. Is that a vacuum line? Any hints on where to start to save me from tearing into the entire thing?
__________________
2004 Chevrolet Suburban C1500 2001 Chevrolet 2500HD Crew 6.0 1999 Harley Davidson Electra Glide 1972 Chevrolet C-20 Custom Camper "Dump Truck" 1972 Chevrolet C-20 Suburban "Big Green" 1969 Chevrolet C-50 Wedge Hauler "Leonidis" 1966 C-10 2x4 short fleet 327 4 speed "Race Truck" 1952 Plymouth Cranbrook "Rican" (my grandfathers) 1931 Ford Model A Coupe "Black Beauty" 1930 Ford Model A truck "Club Cab" 4x4 Rottenwood Garage and Speed Shop.....where everything must be racy! It's not just a hobby..It's a LIFESTYLE!!! Thanks for nothing Barrett-Jackson You cant fix stupid or teach accountability! Time wasters, looky Lous and tire kickers are everywhere! |
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10-25-2014, 06:29 PM
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#2 | |
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Registered User
Join Date: Jun 2014
Location: Orlando Florida
Posts: 1,598
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Re: 86 C10 climate control not changing possition
Yes, vacuum. Start by checking the feed under the hood.
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10-25-2014, 10:32 PM
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#3 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: 86 C10 climate control not changing possition
Blender door clip can be broken or the vacuum line to the motor isn't connected be the firewall
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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10-26-2014, 10:42 AM
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#4 |
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Registered User
Join Date: Aug 2005
Location: Louisiana
Posts: 711
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Re: 86 C10 climate control not changing possition
Yes, that blend door plastic piece is well known to break.
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10-28-2014, 11:58 AM
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#5 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: 86 C10 climate control not changing possition
1.if the rods are ok
2.check white piece that breaks is behind the glove box
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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12-01-2014, 05:07 AM
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#6 |
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Rottenwood Garage Member
Join Date: May 2005
Location: Marietta, Georgia
Posts: 4,321
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Re: 86 C10 climate control not changing possition
Thanks for the info guys!
It was in fact the feed under the hood.. The small hard plastic vacuum line that comes out of the firewall beside the heater box was broken. Easy fix. For those having the same issue, I would start in the engine bay first when trouble shooting this especially if you have been doing engine work prior to the problem. That line is hard and brittle. Make sure you hook it up to constant vacuum. If that doesn't work then head inside under the dash and stand on your head.
__________________
2004 Chevrolet Suburban C1500 2001 Chevrolet 2500HD Crew 6.0 1999 Harley Davidson Electra Glide 1972 Chevrolet C-20 Custom Camper "Dump Truck" 1972 Chevrolet C-20 Suburban "Big Green" 1969 Chevrolet C-50 Wedge Hauler "Leonidis" 1966 C-10 2x4 short fleet 327 4 speed "Race Truck" 1952 Plymouth Cranbrook "Rican" (my grandfathers) 1931 Ford Model A Coupe "Black Beauty" 1930 Ford Model A truck "Club Cab" 4x4 Rottenwood Garage and Speed Shop.....where everything must be racy! It's not just a hobby..It's a LIFESTYLE!!! Thanks for nothing Barrett-Jackson You cant fix stupid or teach accountability! Time wasters, looky Lous and tire kickers are everywhere! |
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