How do you bypass the coolant around the heater core?
Disconnect the heater hoses from the firewall side. Both heater hoses will be connected to nipples, which go through the firewall and into the heater core. To bypass the coolant around the heater core, it is necessary to divert the heater hoses coming from the engine to somewhere other than the core itself.
What happens if the heater core goes out in a car?
If the heater core goes out in your vehicle, it may be necessary to bypass it to keep the cooling system working and to keep coolant from pouring into the passenger compartment.
What to do if your heater core is leaking?
Feel the hoses to ensure they are getting hot if no leaks are detected. If there is a leak and a slight tightening down the hose clamp doesn’t stop it, a small amount of RTV silicone may be used on the plastic connector to help seal the connection. Allow the system to cool before working on any heater hoses.
How does the heating system in a Pontiac Montana work?
In order to troubleshoot the heating system in a Pontiac Montana, it’s important to understand how the heating system works in this vehicle. The hot antifreeze is picked up at the water pump and travels through a hose to the heater core.
Where does the antifreeze go in a Pontiac Montana?
The hot antifreeze is picked up at the water pump and travels through a hose to the heater core. The hot antifreeze travels through the heater core and out the other side and sent back to the thermostat by another hose. The heater blower and the heater core, along with the air conditioning evaporator, are all encased in a housing under the dash.
Where can I get a bypass heater core?
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Disconnect the heater hoses from the firewall side. Both heater hoses will be connected to nipples, which go through the firewall and into the heater core. To bypass the coolant around the heater core, it is necessary to divert the heater hoses coming from the engine to somewhere other than the core itself.