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Topic: Air flow will not regulate.

in Forum: C3 Cooling and Heating Systems

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Air flow will not regulate. (1/9)
5/25/22 8:14pm

Mark Laird
Former Member
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Milford, DE - USA

Vette(s):
1977 C3 Auto Coupe Lt Blue/Dk Blue Prev. 1968 C3 convertible 4spd Red 1984 C4 Automatic Silver 2000 C5 Automatic Black

Joined: 11/6/2021
Posts: 67

Seems like my fan blower only wants to blow air thru the floor vents. Cannot get it to the upper vents for either Air thru upper middle or defrost. Any ideas? 1977 w A/C

Also I'm missing the lower A/C ducting on Left (Drivers) side. Anyone have a used one they like to sell?

Thanks!

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Re: Air flow will not regulate. (2/9)
5/25/22 10:55pm

73shark
Limited Member
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day. 2023 Accelerate Yellow HTC Stingray

Joined: 7/9/2003
Posts: 909

Could be a bad actuator or a leaky/disconnected hose.

______________

1973 L-82 4 spd

Re: Air flow will not regulate. (3/9)
5/29/22 7:11pm

Would that be the Actuator above the right side kick panel?

Re: Air flow will not regulate. (4/9)
5/29/22 7:38pm

I think it would be more on the main ductwork under the dash. There's one actuator that controls the flow of air to the different vents.

______________

1973 L-82 4 spd

Re: Air flow will not regulate. (5/9)
6/2/22 7:04am

rraider1
Limited Member
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1171

Does this Help

Re: Air flow will not regulate. (6/9)
6/2/22 8:25am

rraider1
Limited Member
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1171

Sorry earlier was 77 this is for 74 should still help

Re: Air flow will not regulate. (7/9)
6/2/22 8:26am

rraider1
Limited Member
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1171

Re: Air flow will not regulate. (8/9)
6/2/22 11:25am

Thats what i have is a 1977

Re: Air flow will not regulate. (9/9)
6/2/22 11:26am

Thanks again, your a life saver!

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