Only blows through upper dash by speakers
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From: NY
Car: 1986 Camaro Sport Coupe
Engine: L69
Transmission: 700-R4
Axle/Gears: 2.73's
Only blows through upper dash by speakers
My a/c heat only blows through the upper dash towards the windshield, it doesnt go through any of the middle vents, I just got the blower motor working, any ideas?,
and also I need to recharge my system, can I just use r123, because it originally took r12, and can someone just explain briefly on how the a/c works, like what the compressor does and the evaporator.
Also Which port is the lower service port because when I need to recharge it I dont want to get the wrong port, thanks
and also I need to recharge my system, can I just use r123, because it originally took r12, and can someone just explain briefly on how the a/c works, like what the compressor does and the evaporator.
Also Which port is the lower service port because when I need to recharge it I dont want to get the wrong port, thanks
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
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KOOL SPEAKERS
The blend door(s) is not working.
It’s powered by vacuum.
Pull the HVAC panel and see if the vacuum hose is giving vacuum.
If not trace it back to the engine to find where the break is.
About refrigerant changing:
You should have the system evacuated.
Then add 8 ounces R123 compatible oil:
4 ounces directly into the compressor, then turn the compressor several revolutions by hand.
The balance of the oil into the refrigerant port.
Obtain a set of pressure gages (you‘ll need them anyway).
They should be marked HI and LO sides.
The HI and LO sides have different size inputs which makes it improbable to get it wrong.
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If People Drove Any Slower They’d Be Going BackwardsFog lights are not driving lights. They look dorky. Turn em off slow pokes.
How bout those dorks too scared to drive without headlights on in the daytime!
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Joined: Aug 1999
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Only blows through upper dash by speakers
with the vac problem. Defrost is the default.JamesC
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Member
Joined: Nov 2008
Posts: 119
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From: NY
Car: 1986 Camaro Sport Coupe
Engine: L69
Transmission: 700-R4
Axle/Gears: 2.73's
Re: Only blows through upper dash by speakers
Sorry what's the HVAC panel?
Is it the ***** in the middle controling the airflow?
Is it the ***** in the middle controling the airflow?
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Thread Starter
Member
Joined: Nov 2008
Posts: 119
Likes: 0
From: NY
Car: 1986 Camaro Sport Coupe
Engine: L69
Transmission: 700-R4
Axle/Gears: 2.73's
Re: Only blows through upper dash by speakers
Well I took that apart the other day and everything looked normal,but I wasn't sure where the vaccum lines were
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Only blows through upper dash by speakers
https://www.thirdgen.org/forums/atta...duct010707.jpg
Turn the controls on and stick an ear to the pass side of the unit. If you hear hissing, you've found your problem.
JamesC
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From: West Palm Beach, FL
Car: 1991 Z28
Engine: SBC
Transmission: 700R4
Axle/Gears: 2.73
Re: Only blows through upper dash by speakers
its more then likely the vacuum acutator wheel on the back of the heater controls. If you pull them forward you can see where the vac lines all meet at the back of the heater controls, what they are attaching to on the panel is the actuator wheel, they usually fall apart after some years. take the lines off you the wheel just pops off. I got one at advance awhile back but since then i think they stopped selling them.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Only blows through upper dash by speakers
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