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Help Would Be appreciated

Old Dec 12, 2008 | 07:17 PM
  #1  
DanTeix's Avatar
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From: Bakersfield, Ca
Car: 1991 Firebird Formula
Engine: 305 TBI
Help Would Be appreciated

What is this and what does it do Found a vacuum break thanks for the help

[img=http://img211.imageshack.us/img211/4084/dontknowvr9.th.jpg]
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Old Dec 12, 2008 | 07:19 PM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Help Would Be appreciated

Heater core bypass valve
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Old Dec 12, 2008 | 07:35 PM
  #3  
DanTeix's Avatar
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Joined: Oct 2008
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From: Bakersfield, Ca
Car: 1991 Firebird Formula
Engine: 305 TBI
Re: Help Would Be appreciated

what does it do and what can the vacuum leak cause
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Old Dec 12, 2008 | 07:41 PM
  #4  
Apeiron's Avatar
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Help Would Be appreciated

It bypasses coolant around the heater core when the heater is off.

Vacuum leaks can cause all kinds of issues.
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Old Dec 12, 2008 | 07:46 PM
  #5  
DanTeix's Avatar
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Joined: Oct 2008
Posts: 130
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From: Bakersfield, Ca
Car: 1991 Firebird Formula
Engine: 305 TBI
Re: Help Would Be appreciated

thank you very much.

I also noticed the vacuum hose leads to the something below the driver headlight if I am not bothering you to much what is that. thanks again
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Old Dec 12, 2008 | 07:53 PM
  #6  
Apeiron's Avatar
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Help Would Be appreciated

That's the vacuum reserve canister so that vacuum operated accessories will still work during periods of low engine vacuum.
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