Heater Core Hose Valve Thingy
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Joined: Jun 2005
Posts: 118
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From: Detroit, MI
Car: 91' Pontiac Firebird
Engine: 388 ci Small block CHEVY (4.060x3.75), Dart Iron Eagle Platinum 200cc, Performer intake, 454 TBI, Long Tubes, True Dual 3" GPs
Transmission: 700R4, B&M, Governer Recal, 20,000 GVW cooler
Heater Core Hose Valve Thingy
What the heck is that heater core hose vacuum valve for?
Do you need it? Can you just hook the hoses straight from the intake to the heater core to the radiator without any problems?
Do you need it? Can you just hook the hoses straight from the intake to the heater core to the radiator without any problems?
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Joined: Feb 2005
Posts: 1,034
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From: Fort Lauderdale, FL
Car: 91 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi w/Disc
The one on the passenger's side valve cover with three (I think) hoses and a vacuum line coming out of it? I believe that's for the heater control -- reroutes hot coolant into the heater core on demand from the heater controls @ the dash.
Thread Starter
Banned
Joined: Jun 2005
Posts: 118
Likes: 0
From: Detroit, MI
Car: 91' Pontiac Firebird
Engine: 388 ci Small block CHEVY (4.060x3.75), Dart Iron Eagle Platinum 200cc, Performer intake, 454 TBI, Long Tubes, True Dual 3" GPs
Transmission: 700R4, B&M, Governer Recal, 20,000 GVW cooler
Oh wow, they must have had some space issues with the HVAC in the dash.
SO basically you will have perma heat if you bypass that valve?
SO basically you will have perma heat if you bypass that valve?
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Joined: Feb 2000
Posts: 7,964
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
It will be ok of you bypass it.
I don't have A/C in my car so I can't tell you if it really heats up the car or not, but I believe my 86 Trans Am didn't have the bypass valve and that was fine.
I broke the one on my Formula when I was doing the TB bybass, so I just bypassed the bypass valve.
makes for a cleaner engine bay as well.
I don't have A/C in my car so I can't tell you if it really heats up the car or not, but I believe my 86 Trans Am didn't have the bypass valve and that was fine.
I broke the one on my Formula when I was doing the TB bybass, so I just bypassed the bypass valve.
makes for a cleaner engine bay as well.
Thread Starter
Banned
Joined: Jun 2005
Posts: 118
Likes: 0
From: Detroit, MI
Car: 91' Pontiac Firebird
Engine: 388 ci Small block CHEVY (4.060x3.75), Dart Iron Eagle Platinum 200cc, Performer intake, 454 TBI, Long Tubes, True Dual 3" GPs
Transmission: 700R4, B&M, Governer Recal, 20,000 GVW cooler
Now that I think about it, if you don't have the blower fan ON, it will obviously not push hot air into the cabin.
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Joined: Feb 2005
Posts: 1,034
Likes: 0
From: Fort Lauderdale, FL
Car: 91 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi w/Disc
Now that I've removed the AIR tubes, that valve is bouncing all over the engine while driving. hehehe
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