Why does coolant run through the HVAC?
#1
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Why does coolant run through the HVAC?
Well, I was wondering why coolant runs through the HVAC? I just managed to get my HVAC operational again by replacing the fuse, but my coolant supply from the engine to the HVAC is blocked off, the coolant is directly reintroduced into the engine instead with a single hose running to and from the engine instead of through the HVAC. Am I at risk of breaking something in the HVAC or will my HVAC work less properly due to this?
Thanks in advance, guys!
Thanks in advance, guys!
#3
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Car: 77 Y82
Engine: W72
Transmission: Super T-10
Axle/Gears: 3.23
Re: Why does coolant run through the HVAC?
You won't hurt anything if your heater core is bypassed,you just won't have heat to the cockpit
Last edited by KILLemALL; 07-13-2014 at 07:57 PM.
#4
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Re: Why does coolant run through the HVAC?
What Orr said is correct. This is how the heater works. It is likely that someone bypassed the heater core because it was leaking and they didn't want to replace it. If you decide you want or need heat in your vehicle, be ready to check for leaks as soon as you hook the hoses up to the heater core. It is always a possibility that the PO (previous owner) disconnected the heater core for some other reason, but on a street car I can't think of a good reason to do so.
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Car: 86 IROC
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Transmission: 700-R-4
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Re: Why does coolant run through the HVAC?
be advised, that if your heater core IS leaking. you cant buy a real deal core anymore. all the parts houses only sell aluminum or worse PLASTIC!! you can remove your original one and have it repaired at your local radiator shop.
#7
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Re: Why does coolant run through the HVAC?
also be advised that a leaking core may allow coolant onto//into your pcm
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