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!

 

Lol the hot coolant is how the hvac generates heat for the fan to blow. Thats why in the winter, you have to wait til car heats up before hot air is blown

 

You won't hurt anything if your heater core is bypassed,you just won't have heat to the cockpit

 

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.

 

Alright, makes sense. Thanks a bunch, guys!

 

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.

 

also be advised that a leaking core may allow coolant onto//into your pcm