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Barely any air from vents

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Old Apr 9, 2010 | 05:13 PM
  #1  
THEGunboundGod's Avatar
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From: new hampshire
Car: 1986 Z28
Engine: 305
Transmission: T5
Axle/Gears: 4.11
Barely any air from vents

I'm getting barely any air from my vents, even when it's turned on high. I just replaced the heater core, and the panels that move when you change it from vent, heat, and defrost all moved fine. The blower motor sounds like it's blasting loud on high, but I'm not getting much. Any ideas? Should I take the blower motor out and see if it's clogged?
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Old Apr 9, 2010 | 05:58 PM
  #2  
JamesC's Avatar
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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: Barely any air from vents

Originally Posted by THEGunboundGod
I'm getting barely any air from my vents, even when it's turned on high. I just replaced the heater core, and the panels that move when you change it from vent, heat, and defrost all moved fine. The blower motor sounds like it's blasting loud on high, but I'm not getting much. Any ideas? Should I take the blower motor out and see if it's clogged?
It's possible that you obstructed a door(s) when you replaced the core. That said, the motor is over two decades old, I assume, so it can't be as efficient as it once was.

JamesC

Last edited by JamesC; Apr 9, 2010 at 05:59 PM. Reason: Happy Hour
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Old Apr 9, 2010 | 06:04 PM
  #3  
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From: Mesquite, Texas
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4
Re: Barely any air from vents

i have a similar problem. What helped was checking all of your vacuum connections under the dash, especially the one that is on the far right of the passenger compartment near the door

I helped mine, but it's still weak. It's on high, but it feels like medium.
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Old Apr 9, 2010 | 08:50 PM
  #4  
THEGunboundGod's Avatar
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From: new hampshire
Car: 1986 Z28
Engine: 305
Transmission: T5
Axle/Gears: 4.11
Re: Barely any air from vents

Are the vacuum tubes easy to replace?
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Old Apr 9, 2010 | 08:52 PM
  #5  
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From: Mesquite, Texas
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4
Re: Barely any air from vents

well I found one that was disconnected...
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Old Apr 9, 2010 | 08:56 PM
  #6  
JamesC's Avatar
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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: Barely any air from vents

If there's a vac problem, the default will be defrost. If all functions work, then the problem lies elsewhere.

JamesC
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