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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 11:14pm
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)
 5/26/22 1:55am
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.


Joined: 7/9/2003
Posts: 874

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



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1973 L-82 4 spd

Re: Air flow will not regulate. (3/9)
 5/29/22 10:11pm
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

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

Re: Air flow will not regulate. (4/9)
 5/29/22 10:38pm
73shark
Limited Member
Send Private Message

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.


Joined: 7/9/2003
Posts: 874

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 10:04am
rraider1
Former 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: 1165

Does this Help

Re: Air flow will not regulate. (6/9)
 6/2/22 11:25am
rraider1
Former 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: 1165

Sorry earlier was 77 this is for 74 should still help

Re: Air flow will not regulate. (7/9)
 6/2/22 11:26am
rraider1
Former 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: 1165

 

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

Thats what i have is a 1977

Re: Air flow will not regulate. (9/9)
 6/2/22 2:26pm
Mark Laird
Former Member

Send Private Message

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

Thanks again, your a life saver!

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