I have the same trouble with my 95 pasant wagon with vr6 the book said remove the dash and steering wheel, this is nuts and their should be a better way. I solved the trouble with Bars Leak for about 90 days but now I must replace the heater core.
The heater coil and a heater core is the same thing. Hot water circulates from the engine and through the heater core then back to engine generating heat for your heater system.
through a cracked heater core - possible.
Behind / below the glove compartment area inside a plastic case . You can see where the heater hoses connect to the heater core at the firewall in the engine compartment
Your heater is powered by your heater core. Your engine coolant runs through your engine gets hot, runs through the core heats the air, then back out to radiator. You probably need to replace your heater core.
Yes it will, engine coolant still flows through it when engine is running.
Behind the glove compartment area inside a plastic case . From the engine compartment you can see where the two heater hoses connect to the heater core at the firewall
The heater inlet hose on a Hyundai Accent is in the back of the engine compartment. It goes through the firewall to the heater core.
Same way the heater on your truck works... coolant is run through the engine system, becomes heated, is run through a heater coil, and a blower blows the heated air around the heater coil through the ductwork to heat up the vehicle.
Its under the cowl in engine compartment (close to windshield) in one of the heater hoses that leads to heater core. Black and white plastic with a small vacuum hose attached to the top.
If your heater core is LEAKING engine coolant so that your engine coolant level drops too low or the engine coolant is lost completely and causes your engine to overheat then your engine can be damaged beside the mess the leaking coolant makes inside your vehicle ( you might be able to just temporarily bypass the heater core so that no engine coolant is flowing through the heater core )
The engine coolant flows the engine, and becomes warm. The warm fluid then goes through hoses into the heater core. The blower motor pushes air through the core, letting the now warm core heat the air.
Most (not all) cars are heated by the engine. When fluid moves through the engine it heats up. This fluid moves through the heater core, a fan moves air over the warm heater coils blowing warm air out to the cars cab.