Is the inlet hose to the heater core hot?
I even drianed the entire system and evacutated all the air out of the system and put a vaccum under and filled the system back up still nothing. The inlet hose to the heater core is very hot it comes out of the front of the engine but the out let hose is warm no where close to hot.
What happens when a heater core is clogged?
Hot coolant that has passed through other parts of the engine is run through the heater core as air is forced past it and into the cabin of the vehicle to heat it. A clogged heater core will prevent the coolant from passing through it, limiting the amount of heat that can be transferred.
Why is the outlet Hot when flushing the heater core?
The OP states he has good flow when trying to flush the core yet when the truck is operating the inlet hose is hot and the outlet is cool. That certainly points to a restricted heater core. If the heater core was plugged but the coolant was able to circulate around it without exchanging any heat then the outlet hose would still be hot.
Why is the coolant not flowing through the heater core?
The thermostat was never mentioned. Also, the coolant may not be flowing through the heater core for reasons other than the obvious. The thermostat may be the culprit if you get half the normal amount of heat when the engine is fully hot.
Where does a leaking heater core come from?
A leaking heater core usually will cause a much more annoying leak. On most new vehicles, the heater core is inside the cabin of the vehicle.
Where does the heater core need to be?
The heater core needs to be right next to the fan that pushes the air through your ventilation system. That fan needs to be near the firewall of your car so it can have the ability to both pull air in from outside the vehicle, or recirculate the air in the cabin depending on the settings of the system.
Can a car heater core leak into the cabin?
Even if you have an older vehicle with the heater core outside the cabin, leaking fluid can still find its way into the cabin through the ventilation ducts. Having coolant leaking into the cabin of your vehicle can cause all sorts of problems.
What happens if you have a leak in your heater?
The steam can also quickly spread through your ventilation system making it very difficult to remove the odor. Depending how big the leak is, the steam can cause fogging problems on your windows and leave you with no way to clear the condensation since it is your ventilation system that is spreading the problem.